

<!--XBRL Document Created with Wdesk from Workiva-->
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  <link:labelLink xlink:role="http://www.xbrl.org/2003/role/link" xlink:type="extended">
    <link:label id="lab_gsv_SummaryOfSignificantAccountingPoliciesAbstract_A522B94DD226F11ABE7960ED98399B9B_label_en-US" xlink:label="lab_gsv_SummaryOfSignificantAccountingPoliciesAbstract_A522B94DD226F11ABE7960ED98399B9B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Summary of Significant Accounting Policies [Abstract]</link:label>
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    <link:label id="lab_us-gaap_TradeAndOtherAccountsReceivablePolicy_F0C40D0F8BCE5F96A38760ED983AACBF_terseLabel_en-US" xlink:label="lab_us-gaap_TradeAndOtherAccountsReceivablePolicy_F0C40D0F8BCE5F96A38760ED983AACBF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Receivables Allowance</link:label>
    <link:label id="lab_us-gaap_TradeAndOtherAccountsReceivablePolicy_F0C40D0F8BCE5F96A38760ED983AACBF_label_en-US" xlink:label="lab_us-gaap_TradeAndOtherAccountsReceivablePolicy_F0C40D0F8BCE5F96A38760ED983AACBF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Trade and Other Accounts Receivable, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_TradeAndOtherAccountsReceivablePolicy" xlink:label="loc_us-gaap_TradeAndOtherAccountsReceivablePolicy_F0C40D0F8BCE5F96A38760ED983AACBF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TradeAndOtherAccountsReceivablePolicy_F0C40D0F8BCE5F96A38760ED983AACBF" xlink:to="lab_us-gaap_TradeAndOtherAccountsReceivablePolicy_F0C40D0F8BCE5F96A38760ED983AACBF" xlink:type="arc" />
    <link:label id="lab_us-gaap_LeasePolicyTextBlock_76222FF9173B55B5C02460ED983A00FE_terseLabel_en-US" xlink:label="lab_us-gaap_LeasePolicyTextBlock_76222FF9173B55B5C02460ED983A00FE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Lease, Policy</link:label>
    <link:label id="lab_us-gaap_LeasePolicyTextBlock_76222FF9173B55B5C02460ED983A00FE_label_en-US" xlink:label="lab_us-gaap_LeasePolicyTextBlock_76222FF9173B55B5C02460ED983A00FE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lease, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_LeasePolicyTextBlock" xlink:label="loc_us-gaap_LeasePolicyTextBlock_76222FF9173B55B5C02460ED983A00FE" xlink:type="locator" />
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    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_5A4339BA85931F4BD4F360ED983A02CE_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_5A4339BA85931F4BD4F360ED983A02CE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Property and Equipment</link:label>
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_5A4339BA85931F4BD4F360ED983A02CE_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_5A4339BA85931F4BD4F360ED983A02CE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment, Policy [Policy Text Block]</link:label>
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    <link:label id="lab_us-gaap_AssetRetirementObligationsPolicy_4EAE72F3786E7B84F89B60ED983AC295_terseLabel_en-US" xlink:label="lab_us-gaap_AssetRetirementObligationsPolicy_4EAE72F3786E7B84F89B60ED983AC295" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Asset Retirement Obligations</link:label>
    <link:label id="lab_us-gaap_AssetRetirementObligationsPolicy_4EAE72F3786E7B84F89B60ED983AC295_label_en-US" xlink:label="lab_us-gaap_AssetRetirementObligationsPolicy_4EAE72F3786E7B84F89B60ED983AC295" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Asset Retirement Obligations, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AssetRetirementObligationsPolicy" xlink:label="loc_us-gaap_AssetRetirementObligationsPolicy_4EAE72F3786E7B84F89B60ED983AC295" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetRetirementObligationsPolicy_4EAE72F3786E7B84F89B60ED983AC295" xlink:to="lab_us-gaap_AssetRetirementObligationsPolicy_4EAE72F3786E7B84F89B60ED983AC295" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillAndIntangibleAssetsGoodwillPolicy_4DBC3AC90E7A4856696A60ED983A0C2A_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillAndIntangibleAssetsGoodwillPolicy_4DBC3AC90E7A4856696A60ED983A0C2A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Goodwill</link:label>
    <link:label id="lab_us-gaap_GoodwillAndIntangibleAssetsGoodwillPolicy_4DBC3AC90E7A4856696A60ED983A0C2A_label_en-US" xlink:label="lab_us-gaap_GoodwillAndIntangibleAssetsGoodwillPolicy_4DBC3AC90E7A4856696A60ED983A0C2A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsGoodwillPolicy" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsGoodwillPolicy_4DBC3AC90E7A4856696A60ED983A0C2A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsGoodwillPolicy_4DBC3AC90E7A4856696A60ED983A0C2A" xlink:to="lab_us-gaap_GoodwillAndIntangibleAssetsGoodwillPolicy_4DBC3AC90E7A4856696A60ED983A0C2A" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillAndIntangibleAssetsIntangibleAssetsPolicy_EAE20D3FAEFE0B4CA78160ED983ADA6C_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillAndIntangibleAssetsIntangibleAssetsPolicy_EAE20D3FAEFE0B4CA78160ED983ADA6C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Intangible Assets</link:label>
    <link:label id="lab_us-gaap_GoodwillAndIntangibleAssetsIntangibleAssetsPolicy_EAE20D3FAEFE0B4CA78160ED983ADA6C_label_en-US" xlink:label="lab_us-gaap_GoodwillAndIntangibleAssetsIntangibleAssetsPolicy_EAE20D3FAEFE0B4CA78160ED983ADA6C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block]</link:label>
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    <link:label id="lab_gsv_DeferredCreditsPolicyTextBlock_3940176C5A1937AB5C5960ED983AAAD3_terseLabel_en-US" xlink:label="lab_gsv_DeferredCreditsPolicyTextBlock_3940176C5A1937AB5C5960ED983AAAD3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred Credits</link:label>
    <link:label id="lab_gsv_DeferredCreditsPolicyTextBlock_3940176C5A1937AB5C5960ED983AAAD3_label_en-US" xlink:label="lab_gsv_DeferredCreditsPolicyTextBlock_3940176C5A1937AB5C5960ED983AAAD3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Credits [Policy Text Block]</link:label>
    <link:label id="lab_gsv_DeferredCreditsPolicyTextBlock_3940176C5A1937AB5C5960ED983AAAD3_documentation_en-US" xlink:label="lab_gsv_DeferredCreditsPolicyTextBlock_3940176C5A1937AB5C5960ED983AAAD3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Policy for accounting for deferred credits</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gsv_DeferredCreditsPolicyTextBlock_3940176C5A1937AB5C5960ED983AAAD3" xlink:to="lab_gsv_DeferredCreditsPolicyTextBlock_3940176C5A1937AB5C5960ED983AAAD3" xlink:type="arc" />
    <link:label id="lab_us-gaap_DeferredChargesPolicyTextBlock_16B09BC67A936030C3DD60ED983A52E1_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredChargesPolicyTextBlock_16B09BC67A936030C3DD60ED983A52E1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred Financing Costs</link:label>
    <link:label id="lab_us-gaap_DeferredChargesPolicyTextBlock_16B09BC67A936030C3DD60ED983A52E1_label_en-US" xlink:label="lab_us-gaap_DeferredChargesPolicyTextBlock_16B09BC67A936030C3DD60ED983A52E1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Charges, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DeferredChargesPolicyTextBlock" xlink:label="loc_us-gaap_DeferredChargesPolicyTextBlock_16B09BC67A936030C3DD60ED983A52E1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredChargesPolicyTextBlock_16B09BC67A936030C3DD60ED983A52E1" xlink:to="lab_us-gaap_DeferredChargesPolicyTextBlock_16B09BC67A936030C3DD60ED983A52E1" xlink:type="arc" />
    <link:label id="lab_gsv_AccruedEstimatedPropertyTaxesPolicyTextBlock_C96EFB95182AA657C54060ED983A3746_terseLabel_en-US" xlink:label="lab_gsv_AccruedEstimatedPropertyTaxesPolicyTextBlock_C96EFB95182AA657C54060ED983A3746" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued Estimated Property Taxes</link:label>
    <link:label id="lab_gsv_AccruedEstimatedPropertyTaxesPolicyTextBlock_C96EFB95182AA657C54060ED983A3746_label_en-US" xlink:label="lab_gsv_AccruedEstimatedPropertyTaxesPolicyTextBlock_C96EFB95182AA657C54060ED983A3746" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accrued Estimated Property Taxes Policy [Text Block]</link:label>
    <link:label id="lab_gsv_AccruedEstimatedPropertyTaxesPolicyTextBlock_C96EFB95182AA657C54060ED983A3746_documentation_en-US" xlink:label="lab_gsv_AccruedEstimatedPropertyTaxesPolicyTextBlock_C96EFB95182AA657C54060ED983A3746" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of accounting policy related to accrued estimated property taxes</link:label>
    <link:loc xlink:href="gsv-20161231.xsd#gsv_AccruedEstimatedPropertyTaxesPolicyTextBlock" xlink:label="loc_gsv_AccruedEstimatedPropertyTaxesPolicyTextBlock_C96EFB95182AA657C54060ED983A3746" xlink:type="locator" />
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    <link:label id="lab_us-gaap_RevenueRecognitionPolicyTextBlock_4D7BFC6E45B4F0477BFF60ED983BB63D_terseLabel_en-US" xlink:label="lab_us-gaap_RevenueRecognitionPolicyTextBlock_4D7BFC6E45B4F0477BFF60ED983BB63D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revenue Recognition</link:label>
    <link:label id="lab_us-gaap_RevenueRecognitionPolicyTextBlock_4D7BFC6E45B4F0477BFF60ED983BB63D_label_en-US" xlink:label="lab_us-gaap_RevenueRecognitionPolicyTextBlock_4D7BFC6E45B4F0477BFF60ED983BB63D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue Recognition, Policy [Policy Text Block]</link:label>
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    <link:label id="lab_us-gaap_CostOfSalesPolicyTextBlock_FE401885235ABCA8CD3760ED983B386F_terseLabel_en-US" xlink:label="lab_us-gaap_CostOfSalesPolicyTextBlock_FE401885235ABCA8CD3760ED983B386F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cost of Operations</link:label>
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    <link:label id="lab_gsv_ManagementFeeExpenseRelatedParty_4C0938C9D0E07AFD98F0621B370F370F_verboseLabel_en-US" xlink:label="lab_gsv_ManagementFeeExpenseRelatedParty_4C0938C9D0E07AFD98F0621B370F370F" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Management Fee</link:label>
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    <link:label id="lab_gsv_PropertyTaxesMember_A9EAF0165313FD92417928C77A862B52_label_en-US" xlink:label="lab_gsv_PropertyTaxesMember_A9EAF0165313FD92417928C77A862B52" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property Taxes [Member]</link:label>
    <link:label id="lab_gsv_PropertyTaxesMember_A9EAF0165313FD92417928C77A862B52_documentation_en-US" xlink:label="lab_gsv_PropertyTaxesMember_A9EAF0165313FD92417928C77A862B52" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Property Taxes [Member]</link:label>
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    <link:label id="lab_us-gaap_LeaseArrangementTypeAxis_7DF344A40FB8E2A8C87D28C77A865B2E_terseLabel_en-US" xlink:label="lab_us-gaap_LeaseArrangementTypeAxis_7DF344A40FB8E2A8C87D28C77A865B2E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Parties to Contractual Arrangement [Axis]</link:label>
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    <link:loc xlink:href="gsv-20161231.xsd#gsv_SprintMember" xlink:label="loc_gsv_SprintMember_AA694CD78ED6D34817EC28C77A86F186" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gsv_SprintMember_AA694CD78ED6D34817EC28C77A86F186" xlink:to="lab_gsv_SprintMember_AA694CD78ED6D34817EC28C77A86F186" xlink:type="arc" />
    <link:label id="lab_gsv_Towercountasapercentageoftotaltowers_995F5EB61E3825CE746728C77A864304_terseLabel_en-US" xlink:label="lab_gsv_Towercountasapercentageoftotaltowers_995F5EB61E3825CE746728C77A864304" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tower count as a percentage of total towers</link:label>
    <link:label id="lab_gsv_Towercountasapercentageoftotaltowers_995F5EB61E3825CE746728C77A864304_label_en-US" xlink:label="lab_gsv_Towercountasapercentageoftotaltowers_995F5EB61E3825CE746728C77A864304" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Tower count as a percentage of total towers</link:label>
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    <link:loc xlink:href="gsv-20161231.xsd#gsv_Towercountasapercentageoftotaltowers" xlink:label="loc_gsv_Towercountasapercentageoftotaltowers_995F5EB61E3825CE746728C77A864304" xlink:type="locator" />
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    <link:label id="lab_gsv_PurchaseOptionPercentageofTowers_CFE0E655F8B9BD820AB228C77A86D26D_terseLabel_en-US" xlink:label="lab_gsv_PurchaseOptionPercentageofTowers_CFE0E655F8B9BD820AB228C77A86D26D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Purchase option, percentage of towers</link:label>
    <link:label id="lab_gsv_PurchaseOptionPercentageofTowers_CFE0E655F8B9BD820AB228C77A86D26D_label_en-US" xlink:label="lab_gsv_PurchaseOptionPercentageofTowers_CFE0E655F8B9BD820AB228C77A86D26D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Purchase Option, Percentage of Towers</link:label>
    <link:label id="lab_gsv_PurchaseOptionPercentageofTowers_CFE0E655F8B9BD820AB228C77A86D26D_documentation_en-US" xlink:label="lab_gsv_PurchaseOptionPercentageofTowers_CFE0E655F8B9BD820AB228C77A86D26D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Purchase Option, Percentage of Towers</link:label>
    <link:loc xlink:href="gsv-20161231.xsd#gsv_PurchaseOptionPercentageofTowers" xlink:label="loc_gsv_PurchaseOptionPercentageofTowers_CFE0E655F8B9BD820AB228C77A86D26D" xlink:type="locator" />
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    <link:label id="lab_us-gaap_AssetRetirementObligationAccretionExpense_107A8311B9AB07CEF27B28C77A86E4F0_terseLabel_en-US" xlink:label="lab_us-gaap_AssetRetirementObligationAccretionExpense_107A8311B9AB07CEF27B28C77A86E4F0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accretion expense related to liabilities for contingent retirement obligations</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AssetRetirementObligationAccretionExpense" xlink:label="loc_us-gaap_AssetRetirementObligationAccretionExpense_107A8311B9AB07CEF27B28C77A86E4F0" xlink:type="locator" />
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    <link:label id="lab_us-gaap_AssetRetirementObligation_E985D7F105C5B02F501128C77A86E545_terseLabel_en-US" xlink:label="lab_us-gaap_AssetRetirementObligation_E985D7F105C5B02F501128C77A86E545" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Asset retirement obligation</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AssetRetirementObligation" xlink:label="loc_us-gaap_AssetRetirementObligation_E985D7F105C5B02F501128C77A86E545" xlink:type="locator" />
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    <link:label id="lab_gsv_EstimatedFutureUndiscountedCashFlowsExpectedToBePaidRelatingToAssetRetirementObligations_F001F0E65DB13A8ADD8428C77A87961C_terseLabel_en-US" xlink:label="lab_gsv_EstimatedFutureUndiscountedCashFlowsExpectedToBePaidRelatingToAssetRetirementObligations_F001F0E65DB13A8ADD8428C77A87961C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Asset retirement obligation future outlay</link:label>
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    <link:label id="lab_us-gaap_PaymentsForOtherTaxes_11678D03EB48A3D8DB1A28C77A87D906_terseLabel_en-US" xlink:label="lab_us-gaap_PaymentsForOtherTaxes_11678D03EB48A3D8DB1A28C77A87D906" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Payments for other taxes</link:label>
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    <link:label id="lab_gsv_PropertyTaxCommitmentsAnnualPercentageIncrease_4E54F8600A8A273811FC28C77A871E35_terseLabel_en-US" xlink:label="lab_gsv_PropertyTaxCommitmentsAnnualPercentageIncrease_4E54F8600A8A273811FC28C77A871E35" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Increase in property tax commitment</link:label>
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    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentTransfersAndChanges_D309DF3B20EB355F1F3F673DCEB1BA35_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentTransfersAndChanges_D309DF3B20EB355F1F3F673DCEB1BA35" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment, Transfers and Changes</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTransfersAndChanges" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTransfersAndChanges_D309DF3B20EB355F1F3F673DCEB1BA35" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTransfersAndChanges_D309DF3B20EB355F1F3F673DCEB1BA35" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentTransfersAndChanges_D309DF3B20EB355F1F3F673DCEB1BA35" xlink:type="arc" />
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentGross_C1FC26EB48823292E838673DCEB1509E_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentGross_C1FC26EB48823292E838673DCEB1509E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total gross property and equipment</link:label>
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentGross_C1FC26EB48823292E838673DCEB1509E_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentGross_C1FC26EB48823292E838673DCEB1509E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment, Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_C1FC26EB48823292E838673DCEB1509E" xlink:type="locator" />
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    <link:label id="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_48C47ACA18AE7C2FDE19673DCEB18F59_negatedLabel_en-US" xlink:label="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_48C47ACA18AE7C2FDE19673DCEB18F59" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Less accumulated depreciation</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_48C47ACA18AE7C2FDE19673DCEB18F59" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_48C47ACA18AE7C2FDE19673DCEB18F59" xlink:to="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_48C47ACA18AE7C2FDE19673DCEB18F59" xlink:type="arc" />
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_DA19F74230C0000FEA1D673DCEB11DBF_totalLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_DA19F74230C0000FEA1D673DCEB11DBF" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total property and equipment, net</link:label>
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_DA19F74230C0000FEA1D673DCEB11DBF_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_DA19F74230C0000FEA1D673DCEB11DBF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_DA19F74230C0000FEA1D673DCEB11DBF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_DA19F74230C0000FEA1D673DCEB11DBF" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentNet_DA19F74230C0000FEA1D673DCEB11DBF" xlink:type="arc" />
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentUsefulLife_156542723B123DAC6DAB673DCEB13574_netLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentUsefulLife_156542723B123DAC6DAB673DCEB13574" xlink:role="http://www.xbrl.org/2009/role/netLabel" xlink:type="resource" xml:lang="en-US">Property, plant and equipment, useful life</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_156542723B123DAC6DAB673DCEB13574" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_156542723B123DAC6DAB673DCEB13574" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentUsefulLife_156542723B123DAC6DAB673DCEB13574" xlink:type="arc" />
    <link:label id="lab_us-gaap_Depreciation_7714AA43209805C83BD1673DCEB1088A_terseLabel_en-US" xlink:label="lab_us-gaap_Depreciation_7714AA43209805C83BD1673DCEB1088A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Depreciation expense</link:label>
    <link:label id="lab_us-gaap_Depreciation_7714AA43209805C83BD1673DCEB1088A_label_en-US" xlink:label="lab_us-gaap_Depreciation_7714AA43209805C83BD1673DCEB1088A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Depreciation</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_Depreciation" xlink:label="loc_us-gaap_Depreciation_7714AA43209805C83BD1673DCEB1088A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Depreciation_7714AA43209805C83BD1673DCEB1088A" xlink:to="lab_us-gaap_Depreciation_7714AA43209805C83BD1673DCEB1088A" xlink:type="arc" />
    <link:label id="lab_us-gaap_CapitalLeasedAssetsGross_9DAFAE1FFEA3C55999D0673DCEB26491_terseLabel_en-US" xlink:label="lab_us-gaap_CapitalLeasedAssetsGross_9DAFAE1FFEA3C55999D0673DCEB26491" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Capital Leased Assets, Gross</link:label>
    <link:label id="lab_us-gaap_CapitalLeasedAssetsGross_9DAFAE1FFEA3C55999D0673DCEB26491_label_en-US" xlink:label="lab_us-gaap_CapitalLeasedAssetsGross_9DAFAE1FFEA3C55999D0673DCEB26491" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Capital Leased Assets, Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_CapitalLeasedAssetsGross" xlink:label="loc_us-gaap_CapitalLeasedAssetsGross_9DAFAE1FFEA3C55999D0673DCEB26491" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CapitalLeasedAssetsGross_9DAFAE1FFEA3C55999D0673DCEB26491" xlink:to="lab_us-gaap_CapitalLeasedAssetsGross_9DAFAE1FFEA3C55999D0673DCEB26491" xlink:type="arc" />
    <link:label id="lab_gsv_AccumulatedDepreciationOnCapitalLeaseAssets_8DE61D240F81A7F435DA673DCEB2D608_negatedTerseLabel_en-US" xlink:label="lab_gsv_AccumulatedDepreciationOnCapitalLeaseAssets_8DE61D240F81A7F435DA673DCEB2D608" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Accumulated Depreciation on Capital Lease Assets</link:label>
    <link:label id="lab_gsv_AccumulatedDepreciationOnCapitalLeaseAssets_8DE61D240F81A7F435DA673DCEB2D608_label_en-US" xlink:label="lab_gsv_AccumulatedDepreciationOnCapitalLeaseAssets_8DE61D240F81A7F435DA673DCEB2D608" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated Depreciation on Capital Lease Assets</link:label>
    <link:label id="lab_gsv_AccumulatedDepreciationOnCapitalLeaseAssets_8DE61D240F81A7F435DA673DCEB2D608_documentation_en-US" xlink:label="lab_gsv_AccumulatedDepreciationOnCapitalLeaseAssets_8DE61D240F81A7F435DA673DCEB2D608" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Accumulated Depreciation on Capital Lease Assets</link:label>
    <link:loc xlink:href="gsv-20161231.xsd#gsv_AccumulatedDepreciationOnCapitalLeaseAssets" xlink:label="loc_gsv_AccumulatedDepreciationOnCapitalLeaseAssets_8DE61D240F81A7F435DA673DCEB2D608" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gsv_AccumulatedDepreciationOnCapitalLeaseAssets_8DE61D240F81A7F435DA673DCEB2D608" xlink:to="lab_gsv_AccumulatedDepreciationOnCapitalLeaseAssets_8DE61D240F81A7F435DA673DCEB2D608" xlink:type="arc" />
    <link:label id="lab_gsv_TenderOfferAttributeAxis_DBA7BDACBE4DDBCB16D63E5D411BB974_terseLabel_en-US" xlink:label="lab_gsv_TenderOfferAttributeAxis_DBA7BDACBE4DDBCB16D63E5D411BB974" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tender offer attribute [Axis]</link:label>
    <link:label id="lab_gsv_TenderOfferAttributeAxis_DBA7BDACBE4DDBCB16D63E5D411BB974_label_en-US" xlink:label="lab_gsv_TenderOfferAttributeAxis_DBA7BDACBE4DDBCB16D63E5D411BB974" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Tender offer attribute [Axis]</link:label>
    <link:label id="lab_gsv_TenderOfferAttributeAxis_DBA7BDACBE4DDBCB16D63E5D411BB974_documentation_en-US" xlink:label="lab_gsv_TenderOfferAttributeAxis_DBA7BDACBE4DDBCB16D63E5D411BB974" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tender offer attribute [Axis]</link:label>
    <link:loc xlink:href="gsv-20161231.xsd#gsv_TenderOfferAttributeAxis" xlink:label="loc_gsv_TenderOfferAttributeAxis_DBA7BDACBE4DDBCB16D63E5D411BB974" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gsv_TenderOfferAttributeAxis_DBA7BDACBE4DDBCB16D63E5D411BB974" xlink:to="lab_gsv_TenderOfferAttributeAxis_DBA7BDACBE4DDBCB16D63E5D411BB974" xlink:type="arc" />
    <link:label id="lab_gsv_TenderOfferAttributeDomain_7CB93EF944F44BE986C63E5D411B323B_terseLabel_en-US" xlink:label="lab_gsv_TenderOfferAttributeDomain_7CB93EF944F44BE986C63E5D411B323B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tender offer attribute [Domain]</link:label>
    <link:label id="lab_gsv_TenderOfferAttributeDomain_7CB93EF944F44BE986C63E5D411B323B_label_en-US" xlink:label="lab_gsv_TenderOfferAttributeDomain_7CB93EF944F44BE986C63E5D411B323B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Tender offer attribute [Domain]</link:label>
    <link:label id="lab_gsv_TenderOfferAttributeDomain_7CB93EF944F44BE986C63E5D411B323B_documentation_en-US" xlink:label="lab_gsv_TenderOfferAttributeDomain_7CB93EF944F44BE986C63E5D411B323B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">[Domain] for Tender offer attribute [Axis]</link:label>
    <link:loc xlink:href="gsv-20161231.xsd#gsv_TenderOfferAttributeDomain" xlink:label="loc_gsv_TenderOfferAttributeDomain_7CB93EF944F44BE986C63E5D411B323B" xlink:type="locator" />
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    <link:label id="lab_gsv_PrincipalMember_8F616F584727AA3A431D3E5D411B7251_terseLabel_en-US" xlink:label="lab_gsv_PrincipalMember_8F616F584727AA3A431D3E5D411B7251" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Principal [Member]</link:label>
    <link:label id="lab_gsv_PrincipalMember_8F616F584727AA3A431D3E5D411B7251_label_en-US" xlink:label="lab_gsv_PrincipalMember_8F616F584727AA3A431D3E5D411B7251" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Principal [Member]</link:label>
    <link:label id="lab_gsv_PrincipalMember_8F616F584727AA3A431D3E5D411B7251_documentation_en-US" xlink:label="lab_gsv_PrincipalMember_8F616F584727AA3A431D3E5D411B7251" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Principal [Member]</link:label>
    <link:loc xlink:href="gsv-20161231.xsd#gsv_PrincipalMember" xlink:label="loc_gsv_PrincipalMember_8F616F584727AA3A431D3E5D411B7251" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gsv_PrincipalMember_8F616F584727AA3A431D3E5D411B7251" xlink:to="lab_gsv_PrincipalMember_8F616F584727AA3A431D3E5D411B7251" xlink:type="arc" />
    <link:label id="lab_gsv_AmountOfferedPriorToSettlementDateMember_AFE76AE9C4D2D62754923E5D411C2961_terseLabel_en-US" xlink:label="lab_gsv_AmountOfferedPriorToSettlementDateMember_AFE76AE9C4D2D62754923E5D411C2961" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amount offered prior to settlement date [Member]</link:label>
    <link:label id="lab_gsv_AmountOfferedPriorToSettlementDateMember_AFE76AE9C4D2D62754923E5D411C2961_label_en-US" xlink:label="lab_gsv_AmountOfferedPriorToSettlementDateMember_AFE76AE9C4D2D62754923E5D411C2961" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amount offered prior to settlement date [Member]</link:label>
    <link:label id="lab_gsv_AmountOfferedPriorToSettlementDateMember_AFE76AE9C4D2D62754923E5D411C2961_documentation_en-US" xlink:label="lab_gsv_AmountOfferedPriorToSettlementDateMember_AFE76AE9C4D2D62754923E5D411C2961" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount offered prior to settlement date [Member]</link:label>
    <link:loc xlink:href="gsv-20161231.xsd#gsv_AmountOfferedPriorToSettlementDateMember" xlink:label="loc_gsv_AmountOfferedPriorToSettlementDateMember_AFE76AE9C4D2D62754923E5D411C2961" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gsv_AmountOfferedPriorToSettlementDateMember_AFE76AE9C4D2D62754923E5D411C2961" xlink:to="lab_gsv_AmountOfferedPriorToSettlementDateMember_AFE76AE9C4D2D62754923E5D411C2961" xlink:type="arc" />
    <link:label id="lab_gsv_AmountValidlyTenderedMember_6CB1A8A450A13187D84F3E5D411C18AC_terseLabel_en-US" xlink:label="lab_gsv_AmountValidlyTenderedMember_6CB1A8A450A13187D84F3E5D411C18AC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amount validly tendered [Member]</link:label>
    <link:label id="lab_gsv_AmountValidlyTenderedMember_6CB1A8A450A13187D84F3E5D411C18AC_label_en-US" xlink:label="lab_gsv_AmountValidlyTenderedMember_6CB1A8A450A13187D84F3E5D411C18AC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amount validly tendered [Member]</link:label>
    <link:label id="lab_gsv_AmountValidlyTenderedMember_6CB1A8A450A13187D84F3E5D411C18AC_documentation_en-US" xlink:label="lab_gsv_AmountValidlyTenderedMember_6CB1A8A450A13187D84F3E5D411C18AC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount validly tendered [Member]</link:label>
    <link:loc xlink:href="gsv-20161231.xsd#gsv_AmountValidlyTenderedMember" xlink:label="loc_gsv_AmountValidlyTenderedMember_6CB1A8A450A13187D84F3E5D411C18AC" xlink:type="locator" />
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    <link:label id="lab_gsv_AmountRedeemedAfterTenderMember_B85C8D614A57F9BF60483E5D411C8104_terseLabel_en-US" xlink:label="lab_gsv_AmountRedeemedAfterTenderMember_B85C8D614A57F9BF60483E5D411C8104" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amount redeemed after tender [Member]</link:label>
    <link:label id="lab_gsv_AmountRedeemedAfterTenderMember_B85C8D614A57F9BF60483E5D411C8104_label_en-US" xlink:label="lab_gsv_AmountRedeemedAfterTenderMember_B85C8D614A57F9BF60483E5D411C8104" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amount redeemed after tender [Member]</link:label>
    <link:label id="lab_gsv_AmountRedeemedAfterTenderMember_B85C8D614A57F9BF60483E5D411C8104_documentation_en-US" xlink:label="lab_gsv_AmountRedeemedAfterTenderMember_B85C8D614A57F9BF60483E5D411C8104" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount redeemed after tender [Member]</link:label>
    <link:loc xlink:href="gsv-20161231.xsd#gsv_AmountRedeemedAfterTenderMember" xlink:label="loc_gsv_AmountRedeemedAfterTenderMember_B85C8D614A57F9BF60483E5D411C8104" xlink:type="locator" />
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    <link:label id="lab_gsv_TowerCount_C6F39532D85CF2E6B5E66CB4A24C385F_label_en-US" xlink:label="lab_gsv_TowerCount_C6F39532D85CF2E6B5E66CB4A24C385F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Tower Count</link:label>
    <link:label id="lab_gsv_TowerCount_C6F39532D85CF2E6B5E66CB4A24C385F_documentation_en-US" xlink:label="lab_gsv_TowerCount_C6F39532D85CF2E6B5E66CB4A24C385F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the Company's tower count. Inclusive of towers and other structures, such as rooftops</link:label>
    <link:loc xlink:href="gsv-20161231.xsd#gsv_TowerCount" xlink:label="loc_gsv_TowerCount_C6F39532D85CF2E6B5E66CB4A24C385F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gsv_TowerCount_C6F39532D85CF2E6B5E66CB4A24C385F" xlink:to="lab_gsv_TowerCount_C6F39532D85CF2E6B5E66CB4A24C385F" xlink:type="arc" />
    <link:label id="lab_gsv_GroundLeaseAgreementTerm_77C5C4A1ADA8ED8F2B916CB4A24C4148_terseLabel_en-US" xlink:label="lab_gsv_GroundLeaseAgreementTerm_77C5C4A1ADA8ED8F2B916CB4A24C4148" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Ground Lease Agreement Initial Term</link:label>
    <link:label id="lab_gsv_GroundLeaseAgreementTerm_77C5C4A1ADA8ED8F2B916CB4A24C4148_label_en-US" xlink:label="lab_gsv_GroundLeaseAgreementTerm_77C5C4A1ADA8ED8F2B916CB4A24C4148" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Ground Lease Agreement Term</link:label>
    <link:label id="lab_gsv_GroundLeaseAgreementTerm_77C5C4A1ADA8ED8F2B916CB4A24C4148_documentation_en-US" xlink:label="lab_gsv_GroundLeaseAgreementTerm_77C5C4A1ADA8ED8F2B916CB4A24C4148" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This disclosure represents the term of the Company&#8217;s ground lease agreements</link:label>
    <link:loc xlink:href="gsv-20161231.xsd#gsv_GroundLeaseAgreementTerm" xlink:label="loc_gsv_GroundLeaseAgreementTerm_77C5C4A1ADA8ED8F2B916CB4A24C4148" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gsv_GroundLeaseAgreementTerm_77C5C4A1ADA8ED8F2B916CB4A24C4148" xlink:to="lab_gsv_GroundLeaseAgreementTerm_77C5C4A1ADA8ED8F2B916CB4A24C4148" xlink:type="arc" />
    <link:label id="lab_gsv_PurchaseOptionPrice_85D18DD2210C93B2498A6CB4A24C2385_terseLabel_en-US" xlink:label="lab_gsv_PurchaseOptionPrice_85D18DD2210C93B2498A6CB4A24C2385" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Purchase Option Price</link:label>
    <link:label id="lab_gsv_PurchaseOptionPrice_85D18DD2210C93B2498A6CB4A24C2385_label_en-US" xlink:label="lab_gsv_PurchaseOptionPrice_85D18DD2210C93B2498A6CB4A24C2385" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Purchase Option Price</link:label>
    <link:label id="lab_gsv_PurchaseOptionPrice_85D18DD2210C93B2498A6CB4A24C2385_documentation_en-US" xlink:label="lab_gsv_PurchaseOptionPrice_85D18DD2210C93B2498A6CB4A24C2385" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This element relates to the total future purchase option price.</link:label>
    <link:loc xlink:href="gsv-20161231.xsd#gsv_PurchaseOptionPrice" xlink:label="loc_gsv_PurchaseOptionPrice_85D18DD2210C93B2498A6CB4A24C2385" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gsv_PurchaseOptionPrice_85D18DD2210C93B2498A6CB4A24C2385" xlink:to="lab_gsv_PurchaseOptionPrice_85D18DD2210C93B2498A6CB4A24C2385" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementOfCashFlowsAbstract_BEA15A4FA614DCD5DC3B5C077E2D41CF_label_en-US" xlink:label="lab_us-gaap_StatementOfCashFlowsAbstract_BEA15A4FA614DCD5DC3B5C077E2D41CF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of Cash Flows [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="loc_us-gaap_StatementOfCashFlowsAbstract_BEA15A4FA614DCD5DC3B5C077E2D41CF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_BEA15A4FA614DCD5DC3B5C077E2D41CF" xlink:to="lab_us-gaap_StatementOfCashFlowsAbstract_BEA15A4FA614DCD5DC3B5C077E2D41CF" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_24F7F7F4418F3AE1E6605C077E31368C_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_24F7F7F4418F3AE1E6605C077E31368C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash flows from operating activities:</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_24F7F7F4418F3AE1E6605C077E31368C_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_24F7F7F4418F3AE1E6605C077E31368C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Operating Activities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_24F7F7F4418F3AE1E6605C077E31368C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_24F7F7F4418F3AE1E6605C077E31368C" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_24F7F7F4418F3AE1E6605C077E31368C" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProfitLoss_91E320ED6A48AE0E72255C077E3229E7_verboseLabel_en-US" xlink:label="lab_us-gaap_ProfitLoss_91E320ED6A48AE0E72255C077E3229E7" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Net income (loss)</link:label>
    <link:label id="lab_us-gaap_ProfitLoss_91E320ED6A48AE0E72255C077E3229E7_label_en-US" xlink:label="lab_us-gaap_ProfitLoss_91E320ED6A48AE0E72255C077E3229E7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Income (Loss), Including Portion Attributable to Noncontrolling Interest</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss_91E320ED6A48AE0E72255C077E3229E7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProfitLoss_91E320ED6A48AE0E72255C077E3229E7" xlink:to="lab_us-gaap_ProfitLoss_91E320ED6A48AE0E72255C077E3229E7" xlink:type="arc" />
    <link:label id="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_3F2E86A29635BB48DA455C077E33C2A6_terseLabel_en-US" xlink:label="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_3F2E86A29635BB48DA455C077E33C2A6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Adjustments to reconcile net income (loss) to net cash provided by operating activities:</link:label>
    <link:label id="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_3F2E86A29635BB48DA455C077E33C2A6_label_en-US" xlink:label="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_3F2E86A29635BB48DA455C077E33C2A6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_3F2E86A29635BB48DA455C077E33C2A6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_3F2E86A29635BB48DA455C077E33C2A6" xlink:to="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_3F2E86A29635BB48DA455C077E33C2A6" xlink:type="arc" />
    <link:label id="lab_us-gaap_DepreciationAmortizationAndAccretionNet_089A131C274A3A2B7C0A5C077E337028_terseLabel_en-US" xlink:label="lab_us-gaap_DepreciationAmortizationAndAccretionNet_089A131C274A3A2B7C0A5C077E337028" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Depreciation, amortization and accretion</link:label>
    <link:label id="lab_us-gaap_DepreciationAmortizationAndAccretionNet_089A131C274A3A2B7C0A5C077E337028_label_en-US" xlink:label="lab_us-gaap_DepreciationAmortizationAndAccretionNet_089A131C274A3A2B7C0A5C077E337028" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Depreciation, Amortization and Accretion, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DepreciationAmortizationAndAccretionNet" xlink:label="loc_us-gaap_DepreciationAmortizationAndAccretionNet_089A131C274A3A2B7C0A5C077E337028" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DepreciationAmortizationAndAccretionNet_089A131C274A3A2B7C0A5C077E337028" xlink:to="lab_us-gaap_DepreciationAmortizationAndAccretionNet_089A131C274A3A2B7C0A5C077E337028" xlink:type="arc" />
    <link:label id="lab_gsv_AmortizationOfDeferredFinancingCostsAndOtherNoncashInterest_0324D49F201AB5A47CEE5C077E339522_terseLabel_en-US" xlink:label="lab_gsv_AmortizationOfDeferredFinancingCostsAndOtherNoncashInterest_0324D49F201AB5A47CEE5C077E339522" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortization of deferred financing costs</link:label>
    <link:label id="lab_gsv_AmortizationOfDeferredFinancingCostsAndOtherNoncashInterest_0324D49F201AB5A47CEE5C077E339522_label_en-US" xlink:label="lab_gsv_AmortizationOfDeferredFinancingCostsAndOtherNoncashInterest_0324D49F201AB5A47CEE5C077E339522" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amortization Of Deferred Financing Costs And Other Noncash Interest</link:label>
    <link:label id="lab_gsv_AmortizationOfDeferredFinancingCostsAndOtherNoncashInterest_0324D49F201AB5A47CEE5C077E339522_documentation_en-US" xlink:label="lab_gsv_AmortizationOfDeferredFinancingCostsAndOtherNoncashInterest_0324D49F201AB5A47CEE5C077E339522" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The components of interest expense representing the non-cash expenses against earnings in the period including amortization of deferred financing costs, interest rate swaps, adjustments on long-term debt and other non-cash interest.</link:label>
    <link:loc xlink:href="gsv-20161231.xsd#gsv_AmortizationOfDeferredFinancingCostsAndOtherNoncashInterest" xlink:label="loc_gsv_AmortizationOfDeferredFinancingCostsAndOtherNoncashInterest_0324D49F201AB5A47CEE5C077E339522" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gsv_AmortizationOfDeferredFinancingCostsAndOtherNoncashInterest_0324D49F201AB5A47CEE5C077E339522" xlink:to="lab_gsv_AmortizationOfDeferredFinancingCostsAndOtherNoncashInterest_0324D49F201AB5A47CEE5C077E339522" xlink:type="arc" />
    <link:label id="lab_us-gaap_DeferredIncomeTaxExpenseBenefit_5B366F3F304F959A3DE05C077E33B716_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxExpenseBenefit_5B366F3F304F959A3DE05C077E33B716" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred income tax benefit (provision)</link:label>
    <link:label id="lab_us-gaap_DeferredIncomeTaxExpenseBenefit_5B366F3F304F959A3DE05C077E33B716_label_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxExpenseBenefit_5B366F3F304F959A3DE05C077E33B716" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Income Tax Expense (Benefit)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_5B366F3F304F959A3DE05C077E33B716" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_5B366F3F304F959A3DE05C077E33B716" xlink:to="lab_us-gaap_DeferredIncomeTaxExpenseBenefit_5B366F3F304F959A3DE05C077E33B716" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_B3466B84DA5C1875B4B75C077E334126_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_B3466B84DA5C1875B4B75C077E334126" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Changes in assets and liabilities:</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_B3466B84DA5C1875B4B75C077E334126_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_B3466B84DA5C1875B4B75C077E334126" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Operating Capital [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_B3466B84DA5C1875B4B75C077E334126" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_B3466B84DA5C1875B4B75C077E334126" xlink:to="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_B3466B84DA5C1875B4B75C077E334126" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInInterestPayableNet_D85A8446212B1BDEA72E5C077E337657_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInInterestPayableNet_D85A8446212B1BDEA72E5C077E337657" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Increase (decrease) in accrued interest</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInInterestPayableNet_D85A8446212B1BDEA72E5C077E337657_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInInterestPayableNet_D85A8446212B1BDEA72E5C077E337657" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Interest Payable, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_IncreaseDecreaseInInterestPayableNet" xlink:label="loc_us-gaap_IncreaseDecreaseInInterestPayableNet_D85A8446212B1BDEA72E5C077E337657" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInInterestPayableNet_D85A8446212B1BDEA72E5C077E337657" xlink:to="lab_us-gaap_IncreaseDecreaseInInterestPayableNet_D85A8446212B1BDEA72E5C077E337657" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInAccountsPayableTrade_6E717B616FEC3F9D14AE5C077E33B719_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsPayableTrade_6E717B616FEC3F9D14AE5C077E33B719" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Increase (decrease) in accounts payable</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInAccountsPayableTrade_6E717B616FEC3F9D14AE5C077E33B719_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsPayableTrade_6E717B616FEC3F9D14AE5C077E33B719" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Accounts Payable, Trade</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayableTrade" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayableTrade_6E717B616FEC3F9D14AE5C077E33B719" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInAccountsPayableTrade_6E717B616FEC3F9D14AE5C077E33B719" xlink:to="lab_us-gaap_IncreaseDecreaseInAccountsPayableTrade_6E717B616FEC3F9D14AE5C077E33B719" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_1B3B2214446340AB1F875C077E3376FC_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_1B3B2214446340AB1F875C077E3376FC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Increase (decrease) in deferred revenues, deferred ground lease payable, and other liabilities</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_1B3B2214446340AB1F875C077E3376FC_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_1B3B2214446340AB1F875C077E3376FC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Other Operating Liabilities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_1B3B2214446340AB1F875C077E3376FC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_1B3B2214446340AB1F875C077E3376FC" xlink:to="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_1B3B2214446340AB1F875C077E3376FC" xlink:type="arc" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_IncreaseDecreaseInReceivables" xlink:label="loc_us-gaap_IncreaseDecreaseInReceivables_70C87BA1F1C5140707155C077E336000" xlink:type="locator" />
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    <link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingAssets_0E48A821C1B643D77B155C077E3481E3_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingAssets_0E48A821C1B643D77B155C077E3481E3" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Decrease (increase) in other current assets, deferred site rental receivable, long-term prepaid rent, restricted cash, and other assets</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingAssets_0E48A821C1B643D77B155C077E3481E3_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingAssets_0E48A821C1B643D77B155C077E3481E3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Other Operating Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_0E48A821C1B643D77B155C077E3481E3" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_07C88D4F422C2FE7422D5C077E34F918" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_07C88D4F422C2FE7422D5C077E34F918" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_07C88D4F422C2FE7422D5C077E34F918" xlink:type="arc" />
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    <link:label id="lab_us-gaap_PaymentsToAcquireProductiveAssets_73E58DAF146C53D4AC8A5C077E34B4F6_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireProductiveAssets_73E58DAF146C53D4AC8A5C077E34B4F6" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Capital expenditures</link:label>
    <link:label id="lab_us-gaap_PaymentsToAcquireProductiveAssets_73E58DAF146C53D4AC8A5C077E34B4F6_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireProductiveAssets_73E58DAF146C53D4AC8A5C077E34B4F6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments to Acquire Productive Assets</link:label>
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    <link:label id="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_44141E6A6CC2BEF6549A5C077E34D41D_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_44141E6A6CC2BEF6549A5C077E34D41D" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Other investing activities</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities" xlink:label="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_44141E6A6CC2BEF6549A5C077E34D41D" xlink:type="locator" />
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    <link:label id="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_D82C88517AC1DC68B9A15C077E34FE68_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_D82C88517AC1DC68B9A15C077E34FE68" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Payments for acquisitions of businesses, net of cash acquired</link:label>
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    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_2D63F6A4F9C6DE6D60565C077E347AD5_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_2D63F6A4F9C6DE6D60565C077E347AD5" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash provided by (used for) investing activities</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_2D63F6A4F9C6DE6D60565C077E347AD5" xlink:type="locator" />
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    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_E89E194773CE80B026215C077E340F90_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_E89E194773CE80B026215C077E340F90" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash flows from financing activities:</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_E89E194773CE80B026215C077E340F90_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_E89E194773CE80B026215C077E340F90" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Financing Activities [Abstract]</link:label>
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    <link:label id="lab_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_5C5B54CE64836EDCF470614D8F36A495_terseLabel_en-US" xlink:label="lab_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_5C5B54CE64836EDCF470614D8F36A495" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Property Subject to or Available for Operating Lease [Line Items]</link:label>
    <link:label id="lab_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_5C5B54CE64836EDCF470614D8F36A495_label_en-US" xlink:label="lab_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_5C5B54CE64836EDCF470614D8F36A495" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property Subject to or Available for Operating Lease [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems" xlink:label="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_5C5B54CE64836EDCF470614D8F36A495" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_5C5B54CE64836EDCF470614D8F36A495" xlink:to="lab_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_5C5B54CE64836EDCF470614D8F36A495" xlink:type="arc" />
    <link:label id="lab_gsv_WeightedAverageRemainingTermOfTenantLeasesAtTenantsOption_8DFDD74E05DE86599A50614D8F367A6F_terseLabel_en-US" xlink:label="lab_gsv_WeightedAverageRemainingTermOfTenantLeasesAtTenantsOption_8DFDD74E05DE86599A50614D8F367A6F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted average remaining term of tenant leases</link:label>
    <link:label id="lab_gsv_WeightedAverageRemainingTermOfTenantLeasesAtTenantsOption_8DFDD74E05DE86599A50614D8F367A6F_label_en-US" xlink:label="lab_gsv_WeightedAverageRemainingTermOfTenantLeasesAtTenantsOption_8DFDD74E05DE86599A50614D8F367A6F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Weighted Average Remaining Term Of Tenant Leases at the Tenant's Option</link:label>
    <link:label id="lab_gsv_WeightedAverageRemainingTermOfTenantLeasesAtTenantsOption_8DFDD74E05DE86599A50614D8F367A6F_documentation_en-US" xlink:label="lab_gsv_WeightedAverageRemainingTermOfTenantLeasesAtTenantsOption_8DFDD74E05DE86599A50614D8F367A6F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Weighted-average remaining term of tenant leases, exclusive of renewals at the tenant's option</link:label>
    <link:loc xlink:href="gsv-20161231.xsd#gsv_WeightedAverageRemainingTermOfTenantLeasesAtTenantsOption" xlink:label="loc_gsv_WeightedAverageRemainingTermOfTenantLeasesAtTenantsOption_8DFDD74E05DE86599A50614D8F367A6F" xlink:type="locator" />
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    <link:label id="lab_gsv_MaximumCurrentTerm_DC10012BA9961E6353EF614D8F36ADCB_terseLabel_en-US" xlink:label="lab_gsv_MaximumCurrentTerm_DC10012BA9961E6353EF614D8F36ADCB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Maximum Current Term</link:label>
    <link:label id="lab_gsv_MaximumCurrentTerm_DC10012BA9961E6353EF614D8F36ADCB_label_en-US" xlink:label="lab_gsv_MaximumCurrentTerm_DC10012BA9961E6353EF614D8F36ADCB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Maximum Current Term</link:label>
    <link:label id="lab_gsv_MaximumCurrentTerm_DC10012BA9961E6353EF614D8F36ADCB_documentation_en-US" xlink:label="lab_gsv_MaximumCurrentTerm_DC10012BA9961E6353EF614D8F36ADCB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Maximum current term of tenant contracts, excluding the exercise of tenant renewal options.</link:label>
    <link:loc xlink:href="gsv-20161231.xsd#gsv_MaximumCurrentTerm" xlink:label="loc_gsv_MaximumCurrentTerm_DC10012BA9961E6353EF614D8F36ADCB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gsv_MaximumCurrentTerm_DC10012BA9961E6353EF614D8F36ADCB" xlink:to="lab_gsv_MaximumCurrentTerm_DC10012BA9961E6353EF614D8F36ADCB" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent_9621CC28CB4E640877B1614D8F368B78_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent_9621CC28CB4E640877B1614D8F368B78" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tenant Leases 2017</link:label>
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent_9621CC28CB4E640877B1614D8F368B78_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent_9621CC28CB4E640877B1614D8F368B78" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases, Future Minimum Payments Receivable, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent_9621CC28CB4E640877B1614D8F368B78" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent_9621CC28CB4E640877B1614D8F368B78" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent_9621CC28CB4E640877B1614D8F368B78" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears_42B079951A51BE671D2E614D8F362F04_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears_42B079951A51BE671D2E614D8F362F04" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tenant Leases 2018</link:label>
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears_42B079951A51BE671D2E614D8F362F04_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears_42B079951A51BE671D2E614D8F362F04" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases, Future Minimum Payments Receivable, in Two Years</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears_42B079951A51BE671D2E614D8F362F04" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears_42B079951A51BE671D2E614D8F362F04" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears_42B079951A51BE671D2E614D8F362F04" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears_9F0AEB3BCB5D434C2C6B614D8F372712_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears_9F0AEB3BCB5D434C2C6B614D8F372712" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tenant Leases 2019</link:label>
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears_9F0AEB3BCB5D434C2C6B614D8F372712_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears_9F0AEB3BCB5D434C2C6B614D8F372712" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases, Future Minimum Payments Receivable, in Three Years</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears_9F0AEB3BCB5D434C2C6B614D8F372712" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears_9F0AEB3BCB5D434C2C6B614D8F372712" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears_9F0AEB3BCB5D434C2C6B614D8F372712" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears_78621A2026214C6BBAE5614D8F3759B4_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears_78621A2026214C6BBAE5614D8F3759B4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tenant Leases 2020</link:label>
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears_78621A2026214C6BBAE5614D8F3759B4_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears_78621A2026214C6BBAE5614D8F3759B4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases, Future Minimum Payments Receivable, in Four Years</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears_78621A2026214C6BBAE5614D8F3759B4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears_78621A2026214C6BBAE5614D8F3759B4" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears_78621A2026214C6BBAE5614D8F3759B4" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears_E6BF20A2DC245B95A553614D8F37F688_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears_E6BF20A2DC245B95A553614D8F37F688" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tenant Leases 2021</link:label>
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears_E6BF20A2DC245B95A553614D8F37F688_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears_E6BF20A2DC245B95A553614D8F37F688" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases, Future Minimum Payments Receivable, in Five Years</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears_E6BF20A2DC245B95A553614D8F37F688" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears_E6BF20A2DC245B95A553614D8F37F688" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears_E6BF20A2DC245B95A553614D8F37F688" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter_769D2ED2AEF6B8104468614D8F371A0F_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter_769D2ED2AEF6B8104468614D8F371A0F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tenant Leases thereafter</link:label>
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter_769D2ED2AEF6B8104468614D8F371A0F_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter_769D2ED2AEF6B8104468614D8F371A0F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases, Future Minimum Payments Receivable, Thereafter</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter_769D2ED2AEF6B8104468614D8F371A0F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter_769D2ED2AEF6B8104468614D8F371A0F" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter_769D2ED2AEF6B8104468614D8F371A0F" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable_243ED19C9BCA09C4DC4B614D8F37E209_totalLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable_243ED19C9BCA09C4DC4B614D8F37E209" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total tenant leases</link:label>
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable_243ED19C9BCA09C4DC4B614D8F37E209_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable_243ED19C9BCA09C4DC4B614D8F37E209" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases, Future Minimum Payments Receivable</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable_243ED19C9BCA09C4DC4B614D8F37E209" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable_243ED19C9BCA09C4DC4B614D8F37E209" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable_243ED19C9BCA09C4DC4B614D8F37E209" xlink:type="arc" />
    <link:label id="lab_gsv_Percentageoftowersthatisonlandthathasnoncancelableoperatingleases_120A60C31A5D8CE8D568614D8F373C17_terseLabel_en-US" xlink:label="lab_gsv_Percentageoftowersthatisonlandthathasnoncancelableoperatingleases_120A60C31A5D8CE8D568614D8F373C17" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percentage of wireless infrastructure, office space and equipment that is on land that has non-cancelable operating leases</link:label>
    <link:label id="lab_gsv_Percentageoftowersthatisonlandthathasnoncancelableoperatingleases_120A60C31A5D8CE8D568614D8F373C17_label_en-US" xlink:label="lab_gsv_Percentageoftowersthatisonlandthathasnoncancelableoperatingleases_120A60C31A5D8CE8D568614D8F373C17" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Percentage of towers that is on land that has non-cancelable operating leases</link:label>
    <link:label id="lab_gsv_Percentageoftowersthatisonlandthathasnoncancelableoperatingleases_120A60C31A5D8CE8D568614D8F373C17_documentation_en-US" xlink:label="lab_gsv_Percentageoftowersthatisonlandthathasnoncancelableoperatingleases_120A60C31A5D8CE8D568614D8F373C17" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The percentage of towers, office space and equipment that is on land that has non-cancelable operating leases.</link:label>
    <link:loc xlink:href="gsv-20161231.xsd#gsv_Percentageoftowersthatisonlandthathasnoncancelableoperatingleases" xlink:label="loc_gsv_Percentageoftowersthatisonlandthathasnoncancelableoperatingleases_120A60C31A5D8CE8D568614D8F373C17" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gsv_Percentageoftowersthatisonlandthathasnoncancelableoperatingleases_120A60C31A5D8CE8D568614D8F373C17" xlink:to="lab_gsv_Percentageoftowersthatisonlandthathasnoncancelableoperatingleases_120A60C31A5D8CE8D568614D8F373C17" xlink:type="arc" />
    <link:label id="lab_gsv_PercentageOfSiteRentalGrossMarginThatIsDerivedFromTowersWhereLeaseForLandHasFinalExpirationDate_4B272F31F495E9A29589614D8F373A6E_terseLabel_en-US" xlink:label="lab_gsv_PercentageOfSiteRentalGrossMarginThatIsDerivedFromTowersWhereLeaseForLandHasFinalExpirationDate_4B272F31F495E9A29589614D8F373A6E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percentage of site rental gross margin that is derived from wireless infrastructure where the lease for the land has a final expiration date</link:label>
    <link:label id="lab_gsv_PercentageOfSiteRentalGrossMarginThatIsDerivedFromTowersWhereLeaseForLandHasFinalExpirationDate_4B272F31F495E9A29589614D8F373A6E_label_en-US" xlink:label="lab_gsv_PercentageOfSiteRentalGrossMarginThatIsDerivedFromTowersWhereLeaseForLandHasFinalExpirationDate_4B272F31F495E9A29589614D8F373A6E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Percentage of site rental gross margin that is derived from towers where the lease for the land has a final expiration date</link:label>
    <link:label id="lab_gsv_PercentageOfSiteRentalGrossMarginThatIsDerivedFromTowersWhereLeaseForLandHasFinalExpirationDate_4B272F31F495E9A29589614D8F373A6E_documentation_en-US" xlink:label="lab_gsv_PercentageOfSiteRentalGrossMarginThatIsDerivedFromTowersWhereLeaseForLandHasFinalExpirationDate_4B272F31F495E9A29589614D8F373A6E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage of site rental gross margin that is derived from towers where the lease for the land has a final expiration date.</link:label>
    <link:loc xlink:href="gsv-20161231.xsd#gsv_PercentageOfSiteRentalGrossMarginThatIsDerivedFromTowersWhereLeaseForLandHasFinalExpirationDate" xlink:label="loc_gsv_PercentageOfSiteRentalGrossMarginThatIsDerivedFromTowersWhereLeaseForLandHasFinalExpirationDate_4B272F31F495E9A29589614D8F373A6E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gsv_PercentageOfSiteRentalGrossMarginThatIsDerivedFromTowersWhereLeaseForLandHasFinalExpirationDate_4B272F31F495E9A29589614D8F373A6E" xlink:to="lab_gsv_PercentageOfSiteRentalGrossMarginThatIsDerivedFromTowersWhereLeaseForLandHasFinalExpirationDate_4B272F31F495E9A29589614D8F373A6E" xlink:type="arc" />
    <link:label id="lab_gsv_MaximumLeaseTermYears_FA1188E7D7845EF727DD614D8F3775A1_terseLabel_en-US" xlink:label="lab_gsv_MaximumLeaseTermYears_FA1188E7D7845EF727DD614D8F3775A1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating leases, owned land under tower, expiration term</link:label>
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    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentGross_084ECDF3C5CDCB10542E3E4E86FD0322_verboseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentGross_084ECDF3C5CDCB10542E3E4E86FD0322" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment, Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_084ECDF3C5CDCB10542E3E4E86FD0322" xlink:type="locator" />
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    <link:label id="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_AABA452B68BD1E2B5AF93E4E86FE1E20_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_AABA452B68BD1E2B5AF93E4E86FE1E20" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_AABA452B68BD1E2B5AF93E4E86FE1E20" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances" xlink:label="loc_us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances_9E9B4977F64EB1CEB5DE3E4E86FE082A" xlink:type="locator" />
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    <link:label id="lab_us-gaap_RealEstateAccumulatedDepreciation_6DBE259488EFEDDB12913E4E86FE841B_label_en-US" xlink:label="lab_us-gaap_RealEstateAccumulatedDepreciation_6DBE259488EFEDDB12913E4E86FE841B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">SEC Schedule III, Real Estate Accumulated Depreciation</link:label>
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    <link:label id="lab_us-gaap_RealEstateImprovements_80A51A7EB59549F745123E4E86FEE36D_label_en-US" xlink:label="lab_us-gaap_RealEstateImprovements_80A51A7EB59549F745123E4E86FEE36D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">SEC Schedule III, Real Estate, Improvements</link:label>
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    <link:label id="lab_gsv_RealEstatePeriodAdditionstoCost_BC9D82FD260DE6A6E39A3E4E86FE297D_label_en-US" xlink:label="lab_gsv_RealEstatePeriodAdditionstoCost_BC9D82FD260DE6A6E39A3E4E86FE297D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Real Estate Period Additions to Cost</link:label>
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    <link:label id="lab_us-gaap_NameOfMajorCustomerDomain_2CA4947F6FFDC17C299D6CB4A2A52C12_terseLabel_en-US" xlink:label="lab_us-gaap_NameOfMajorCustomerDomain_2CA4947F6FFDC17C299D6CB4A2A52C12" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Name of Major Customer [Domain]</link:label>
    <link:label id="lab_us-gaap_NameOfMajorCustomerDomain_2CA4947F6FFDC17C299D6CB4A2A52C12_label_en-US" xlink:label="lab_us-gaap_NameOfMajorCustomerDomain_2CA4947F6FFDC17C299D6CB4A2A52C12" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Customer [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NameOfMajorCustomerDomain" xlink:label="loc_us-gaap_NameOfMajorCustomerDomain_2CA4947F6FFDC17C299D6CB4A2A52C12" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NameOfMajorCustomerDomain_2CA4947F6FFDC17C299D6CB4A2A52C12" xlink:to="lab_us-gaap_NameOfMajorCustomerDomain_2CA4947F6FFDC17C299D6CB4A2A52C12" xlink:type="arc" />
    <link:label id="lab_gsv_AtTMember_E9008CEA283139D80A606CB4A2A506F8_terseLabel_en-US" xlink:label="lab_gsv_AtTMember_E9008CEA283139D80A606CB4A2A506F8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">AT&amp;T [Member]</link:label>
    <link:label id="lab_gsv_AtTMember_E9008CEA283139D80A606CB4A2A506F8_label_en-US" xlink:label="lab_gsv_AtTMember_E9008CEA283139D80A606CB4A2A506F8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">AT T [Member]</link:label>
    <link:label id="lab_gsv_AtTMember_E9008CEA283139D80A606CB4A2A506F8_documentation_en-US" xlink:label="lab_gsv_AtTMember_E9008CEA283139D80A606CB4A2A506F8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">AT&amp;T</link:label>
    <link:loc xlink:href="gsv-20161231.xsd#gsv_AtTMember" xlink:label="loc_gsv_AtTMember_E9008CEA283139D80A606CB4A2A506F8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gsv_AtTMember_E9008CEA283139D80A606CB4A2A506F8" xlink:to="lab_gsv_AtTMember_E9008CEA283139D80A606CB4A2A506F8" xlink:type="arc" />
    <link:label id="lab_gsv_TMobileMember_270E47A1CB398988B4CE6CB4A2A566B6_terseLabel_en-US" xlink:label="lab_gsv_TMobileMember_270E47A1CB398988B4CE6CB4A2A566B6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">T-Mobile [Member]</link:label>
    <link:label id="lab_gsv_TMobileMember_270E47A1CB398988B4CE6CB4A2A566B6_label_en-US" xlink:label="lab_gsv_TMobileMember_270E47A1CB398988B4CE6CB4A2A566B6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">T-Mobile [Member]</link:label>
    <link:label id="lab_gsv_TMobileMember_270E47A1CB398988B4CE6CB4A2A566B6_documentation_en-US" xlink:label="lab_gsv_TMobileMember_270E47A1CB398988B4CE6CB4A2A566B6" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">T-Mobile</link:label>
    <link:loc xlink:href="gsv-20161231.xsd#gsv_TMobileMember" xlink:label="loc_gsv_TMobileMember_270E47A1CB398988B4CE6CB4A2A566B6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gsv_TMobileMember_270E47A1CB398988B4CE6CB4A2A566B6" xlink:to="lab_gsv_TMobileMember_270E47A1CB398988B4CE6CB4A2A566B6" xlink:type="arc" />
    <link:label id="lab_gsv_VerizonWirelessMember_1D34E37271A7700073F76CB4A2A55790_terseLabel_en-US" xlink:label="lab_gsv_VerizonWirelessMember_1D34E37271A7700073F76CB4A2A55790" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Verizon Wireless [Member]</link:label>
    <link:label id="lab_gsv_VerizonWirelessMember_1D34E37271A7700073F76CB4A2A55790_label_en-US" xlink:label="lab_gsv_VerizonWirelessMember_1D34E37271A7700073F76CB4A2A55790" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Verizon Wireless [Member]</link:label>
    <link:label id="lab_gsv_VerizonWirelessMember_1D34E37271A7700073F76CB4A2A55790_documentation_en-US" xlink:label="lab_gsv_VerizonWirelessMember_1D34E37271A7700073F76CB4A2A55790" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Verizon Wireless</link:label>
    <link:loc xlink:href="gsv-20161231.xsd#gsv_VerizonWirelessMember" xlink:label="loc_gsv_VerizonWirelessMember_1D34E37271A7700073F76CB4A2A55790" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gsv_VerizonWirelessMember_1D34E37271A7700073F76CB4A2A55790" xlink:to="lab_gsv_VerizonWirelessMember_1D34E37271A7700073F76CB4A2A55790" xlink:type="arc" />
    <link:label id="lab_gsv_SprintClearwireConsolidationMember_F304AF411BC5153E2EEE6CB4A2A5A43C_terseLabel_en-US" xlink:label="lab_gsv_SprintClearwireConsolidationMember_F304AF411BC5153E2EEE6CB4A2A5A43C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Sprint Clearwire Consolidation [Member]</link:label>
    <link:label id="lab_gsv_SprintClearwireConsolidationMember_F304AF411BC5153E2EEE6CB4A2A5A43C_label_en-US" xlink:label="lab_gsv_SprintClearwireConsolidationMember_F304AF411BC5153E2EEE6CB4A2A5A43C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Sprint Clearwire Consolidation [Member]</link:label>
    <link:label id="lab_gsv_SprintClearwireConsolidationMember_F304AF411BC5153E2EEE6CB4A2A5A43C_documentation_en-US" xlink:label="lab_gsv_SprintClearwireConsolidationMember_F304AF411BC5153E2EEE6CB4A2A5A43C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Sprint Clearwire Consolidation [Member]</link:label>
    <link:loc xlink:href="gsv-20161231.xsd#gsv_SprintClearwireConsolidationMember" xlink:label="loc_gsv_SprintClearwireConsolidationMember_F304AF411BC5153E2EEE6CB4A2A5A43C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gsv_SprintClearwireConsolidationMember_F304AF411BC5153E2EEE6CB4A2A5A43C" xlink:to="lab_gsv_SprintClearwireConsolidationMember_F304AF411BC5153E2EEE6CB4A2A5A43C" xlink:type="arc" />
    <link:label id="lab_gsv_ATTLeapWirelessConsolidationMember_20B13DB8B41C6083408E6CB4A2A51A4C_terseLabel_en-US" xlink:label="lab_gsv_ATTLeapWirelessConsolidationMember_20B13DB8B41C6083408E6CB4A2A51A4C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">ATT Leap Wireless Consolidation [Member]</link:label>
    <link:label id="lab_gsv_ATTLeapWirelessConsolidationMember_20B13DB8B41C6083408E6CB4A2A51A4C_label_en-US" xlink:label="lab_gsv_ATTLeapWirelessConsolidationMember_20B13DB8B41C6083408E6CB4A2A51A4C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ATT Leap Wireless Consolidation [Member]</link:label>
    <link:label id="lab_gsv_ATTLeapWirelessConsolidationMember_20B13DB8B41C6083408E6CB4A2A51A4C_documentation_en-US" xlink:label="lab_gsv_ATTLeapWirelessConsolidationMember_20B13DB8B41C6083408E6CB4A2A51A4C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">ATT Leap Wireless Consolidation [Member]</link:label>
    <link:loc xlink:href="gsv-20161231.xsd#gsv_ATTLeapWirelessConsolidationMember" xlink:label="loc_gsv_ATTLeapWirelessConsolidationMember_20B13DB8B41C6083408E6CB4A2A51A4C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gsv_ATTLeapWirelessConsolidationMember_20B13DB8B41C6083408E6CB4A2A51A4C" xlink:to="lab_gsv_ATTLeapWirelessConsolidationMember_20B13DB8B41C6083408E6CB4A2A51A4C" xlink:type="arc" />
    <link:label id="lab_gsv_TMobileMetroConsolidationMember_61AC93ED5622A529EB616CB4A2A575B7_terseLabel_en-US" xlink:label="lab_gsv_TMobileMetroConsolidationMember_61AC93ED5622A529EB616CB4A2A575B7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">T-Mobile Metro Consolidation [Member]</link:label>
    <link:label id="lab_gsv_TMobileMetroConsolidationMember_61AC93ED5622A529EB616CB4A2A575B7_label_en-US" xlink:label="lab_gsv_TMobileMetroConsolidationMember_61AC93ED5622A529EB616CB4A2A575B7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">T-Mobile Metro Consolidation [Member]</link:label>
    <link:label id="lab_gsv_TMobileMetroConsolidationMember_61AC93ED5622A529EB616CB4A2A575B7_documentation_en-US" xlink:label="lab_gsv_TMobileMetroConsolidationMember_61AC93ED5622A529EB616CB4A2A575B7" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">T-Mobile Metro Consolidation [Member]</link:label>
    <link:loc xlink:href="gsv-20161231.xsd#gsv_TMobileMetroConsolidationMember" xlink:label="loc_gsv_TMobileMetroConsolidationMember_61AC93ED5622A529EB616CB4A2A575B7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gsv_TMobileMetroConsolidationMember_61AC93ED5622A529EB616CB4A2A575B7" xlink:to="lab_gsv_TMobileMetroConsolidationMember_61AC93ED5622A529EB616CB4A2A575B7" xlink:type="arc" />
    <link:label id="lab_us-gaap_ConcentrationRiskPercentage1_380DA0021CFD3BFB69F86CB4A2A6F060_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskPercentage1_380DA0021CFD3BFB69F86CB4A2A6F060" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percentage of the consolidated revenues</link:label>
    <link:label id="lab_us-gaap_ConcentrationRiskPercentage1_380DA0021CFD3BFB69F86CB4A2A6F060_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskPercentage1_380DA0021CFD3BFB69F86CB4A2A6F060" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Concentration Risk, Percentage</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ConcentrationRiskPercentage1" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_380DA0021CFD3BFB69F86CB4A2A6F060" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConcentrationRiskPercentage1_380DA0021CFD3BFB69F86CB4A2A6F060" xlink:to="lab_us-gaap_ConcentrationRiskPercentage1_380DA0021CFD3BFB69F86CB4A2A6F060" xlink:type="arc" />
    <link:label id="lab_gsv_TowerCountPercentage_D71D071E8D036F0A27F16CB4A2A6390A_terseLabel_en-US" xlink:label="lab_gsv_TowerCountPercentage_D71D071E8D036F0A27F16CB4A2A6390A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tower count</link:label>
    <link:label id="lab_gsv_TowerCountPercentage_D71D071E8D036F0A27F16CB4A2A6390A_label_en-US" xlink:label="lab_gsv_TowerCountPercentage_D71D071E8D036F0A27F16CB4A2A6390A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Tower Count Percentage</link:label>
    <link:label id="lab_gsv_TowerCountPercentage_D71D071E8D036F0A27F16CB4A2A6390A_documentation_en-US" xlink:label="lab_gsv_TowerCountPercentage_D71D071E8D036F0A27F16CB4A2A6390A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the Company's tower count as a percentage of total towers.  Inclusive of towers and other structures, such as rooftops.</link:label>
    <link:loc xlink:href="gsv-20161231.xsd#gsv_TowerCountPercentage" xlink:label="loc_gsv_TowerCountPercentage_D71D071E8D036F0A27F16CB4A2A6390A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gsv_TowerCountPercentage_D71D071E8D036F0A27F16CB4A2A6390A" xlink:to="lab_gsv_TowerCountPercentage_D71D071E8D036F0A27F16CB4A2A6390A" xlink:type="arc" />
    <link:label id="lab_gsv_WeightedAverageRemainingTermOfTenantLeases_5DEAC721E87913DFE0A86CB4A2A69997_terseLabel_en-US" xlink:label="lab_gsv_WeightedAverageRemainingTermOfTenantLeases_5DEAC721E87913DFE0A86CB4A2A69997" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted Average Remaining Term Of Tenant Leases</link:label>
    <link:label id="lab_gsv_WeightedAverageRemainingTermOfTenantLeases_5DEAC721E87913DFE0A86CB4A2A69997_label_en-US" xlink:label="lab_gsv_WeightedAverageRemainingTermOfTenantLeases_5DEAC721E87913DFE0A86CB4A2A69997" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Weighted Average Remaining Term Of Tenant Leases</link:label>
    <link:label id="lab_gsv_WeightedAverageRemainingTermOfTenantLeases_5DEAC721E87913DFE0A86CB4A2A69997_documentation_en-US" xlink:label="lab_gsv_WeightedAverageRemainingTermOfTenantLeases_5DEAC721E87913DFE0A86CB4A2A69997" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Weighted-average remaining term of tenant leases, exclusive of renewals at the tenant's option.</link:label>
    <link:loc xlink:href="gsv-20161231.xsd#gsv_WeightedAverageRemainingTermOfTenantLeases" xlink:label="loc_gsv_WeightedAverageRemainingTermOfTenantLeases_5DEAC721E87913DFE0A86CB4A2A69997" xlink:type="locator" />
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    <link:label id="lab_gsv_Revenuefromconsolidatedtenantduringmergeraspercentageofnetrevenues_BF4C7594C126CB86C8446CB4A2A6A917_terseLabel_en-US" xlink:label="lab_gsv_Revenuefromconsolidatedtenantduringmergeraspercentageofnetrevenues_BF4C7594C126CB86C8446CB4A2A6A917" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revenue from consolidated tenant during merger as percentage of net revenues</link:label>
    <link:label id="lab_gsv_Revenuefromconsolidatedtenantduringmergeraspercentageofnetrevenues_BF4C7594C126CB86C8446CB4A2A6A917_label_en-US" xlink:label="lab_gsv_Revenuefromconsolidatedtenantduringmergeraspercentageofnetrevenues_BF4C7594C126CB86C8446CB4A2A6A917" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue from consolidated tenant during merger as percentage of net revenues</link:label>
    <link:label id="lab_gsv_Revenuefromconsolidatedtenantduringmergeraspercentageofnetrevenues_BF4C7594C126CB86C8446CB4A2A6A917_documentation_en-US" xlink:label="lab_gsv_Revenuefromconsolidatedtenantduringmergeraspercentageofnetrevenues_BF4C7594C126CB86C8446CB4A2A6A917" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents revenue from consolidated tenant during merger as percentage of consolidate net revenues.</link:label>
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    <link:label id="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_AD3C891AF6782145BCC76CB4A26644B8_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_AD3C891AF6782145BCC76CB4A26644B8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Intangible Assets</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_AD3C891AF6782145BCC76CB4A26644B8" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_06E27C49BB9C334E23656CB4A266815A_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_06E27C49BB9C334E23656CB4A266815A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Estimated Annual Amortization Expense</link:label>
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