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    <link:label id="lab_gsv_Towercountasapercentageoftotaltowers_6C66F22516B91E7000DABCAA4822FDBB_terseLabel_en-US" xlink:label="lab_gsv_Towercountasapercentageoftotaltowers_6C66F22516B91E7000DABCAA4822FDBB" 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>
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    <link:label id="lab_us-gaap_Goodwill_E37CB9DF794CC3300163BCAA48A98F63_terseLabel_en-US" xlink:label="lab_us-gaap_Goodwill_E37CB9DF794CC3300163BCAA48A98F63" 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_Goodwill_E37CB9DF794CC3300163BCAA48A98F63_label_en-US" xlink:label="lab_us-gaap_Goodwill_E37CB9DF794CC3300163BCAA48A98F63" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill</link:label>
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    <link:label id="lab_gsv_SiteRentalContractsAndCustomerRelationshipsNet_58F3D65BB8FF509841F3BCAA48AACB42_terseLabel_en-US" xlink:label="lab_gsv_SiteRentalContractsAndCustomerRelationshipsNet_58F3D65BB8FF509841F3BCAA48AACB42" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Site rental contracts and customer relationships, net</link:label>
    <link:label id="lab_gsv_SiteRentalContractsAndCustomerRelationshipsNet_58F3D65BB8FF509841F3BCAA48AACB42_label_en-US" xlink:label="lab_gsv_SiteRentalContractsAndCustomerRelationshipsNet_58F3D65BB8FF509841F3BCAA48AACB42" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Site Rental Contracts And Customer Relationships Net</link:label>
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    <link:label id="lab_us-gaap_OtherAssetsNoncurrent_1B03FFEB8C01BF682B71BCAA48AA3C20_label_en-US" xlink:label="lab_us-gaap_OtherAssetsNoncurrent_1B03FFEB8C01BF682B71BCAA48AA3C20" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Assets, Noncurrent</link:label>
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    <link:label id="lab_us-gaap_Assets_E6B50C3218A99E5C8702BCAA48AAB48D_totalLabel_en-US" xlink:label="lab_us-gaap_Assets_E6B50C3218A99E5C8702BCAA48AAB48D" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total Assets</link:label>
    <link:label id="lab_us-gaap_Assets_E6B50C3218A99E5C8702BCAA48AAB48D_label_en-US" xlink:label="lab_us-gaap_Assets_E6B50C3218A99E5C8702BCAA48AAB48D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets</link:label>
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    <link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_46D7A7CECA6CE178A286BCAA48AA3562_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_46D7A7CECA6CE178A286BCAA48AA3562" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">LIABILITIES AND EQUITY</link:label>
    <link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_46D7A7CECA6CE178A286BCAA48AA3562_label_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_46D7A7CECA6CE178A286BCAA48AA3562" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities and Equity [Abstract]</link:label>
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    <link:label id="lab_us-gaap_AccountsPayableCurrent_1AE678DF566C82753778BCAA48AA5475_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsPayableCurrent_1AE678DF566C82753778BCAA48AA5475" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounts payable</link:label>
    <link:label id="lab_us-gaap_AccountsPayableCurrent_1AE678DF566C82753778BCAA48AA5475_label_en-US" xlink:label="lab_us-gaap_AccountsPayableCurrent_1AE678DF566C82753778BCAA48AA5475" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounts Payable, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="loc_us-gaap_AccountsPayableCurrent_1AE678DF566C82753778BCAA48AA5475" xlink:type="locator" />
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    <link:label id="lab_us-gaap_AccruedIncomeTaxesCurrent_416107C93432B2E57728BCAA48AA23BA_terseLabel_en-US" xlink:label="lab_us-gaap_AccruedIncomeTaxesCurrent_416107C93432B2E57728BCAA48AA23BA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued income taxes</link:label>
    <link:label id="lab_us-gaap_AccruedIncomeTaxesCurrent_416107C93432B2E57728BCAA48AA23BA_label_en-US" xlink:label="lab_us-gaap_AccruedIncomeTaxesCurrent_416107C93432B2E57728BCAA48AA23BA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accrued Income Taxes, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccruedIncomeTaxesCurrent" xlink:label="loc_us-gaap_AccruedIncomeTaxesCurrent_416107C93432B2E57728BCAA48AA23BA" xlink:type="locator" />
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    <link:label id="lab_us-gaap_InterestPayableCurrent_A2300C224CA19DFF643ABCAA48AABAB1_terseLabel_en-US" xlink:label="lab_us-gaap_InterestPayableCurrent_A2300C224CA19DFF643ABCAA48AABAB1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued interest</link:label>
    <link:label id="lab_us-gaap_InterestPayableCurrent_A2300C224CA19DFF643ABCAA48AABAB1_label_en-US" xlink:label="lab_us-gaap_InterestPayableCurrent_A2300C224CA19DFF643ABCAA48AABAB1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest Payable, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_InterestPayableCurrent" xlink:label="loc_us-gaap_InterestPayableCurrent_A2300C224CA19DFF643ABCAA48AABAB1" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DeferredRevenueCurrent_DE000BDA5B91CE872387BCAA48AADFDC_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredRevenueCurrent_DE000BDA5B91CE872387BCAA48AADFDC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred revenues</link:label>
    <link:label id="lab_us-gaap_DeferredRevenueCurrent_DE000BDA5B91CE872387BCAA48AADFDC_label_en-US" xlink:label="lab_us-gaap_DeferredRevenueCurrent_DE000BDA5B91CE872387BCAA48AADFDC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Revenue, Current</link:label>
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    <link:label id="lab_us-gaap_AccruedLiabilitiesCurrent_555AFE4D62D484D8FCF2BCAA48AA5908_terseLabel_en-US" xlink:label="lab_us-gaap_AccruedLiabilitiesCurrent_555AFE4D62D484D8FCF2BCAA48AA5908" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other accrued liabilities</link:label>
    <link:label id="lab_us-gaap_AccruedLiabilitiesCurrent_555AFE4D62D484D8FCF2BCAA48AA5908_label_en-US" xlink:label="lab_us-gaap_AccruedLiabilitiesCurrent_555AFE4D62D484D8FCF2BCAA48AA5908" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accrued Liabilities, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccruedLiabilitiesCurrent" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_555AFE4D62D484D8FCF2BCAA48AA5908" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DebtCurrent_F1F7B1B3A77B0EDDEB47BCAA48AA4AA4_terseLabel_en-US" xlink:label="lab_us-gaap_DebtCurrent_F1F7B1B3A77B0EDDEB47BCAA48AA4AA4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current maturities of debt and other obligations</link:label>
    <link:label id="lab_us-gaap_DebtCurrent_F1F7B1B3A77B0EDDEB47BCAA48AA4AA4_label_en-US" xlink:label="lab_us-gaap_DebtCurrent_F1F7B1B3A77B0EDDEB47BCAA48AA4AA4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtCurrent" xlink:label="loc_us-gaap_DebtCurrent_F1F7B1B3A77B0EDDEB47BCAA48AA4AA4" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LiabilitiesCurrent_98D55E9D4B7251A91351BCAA48AA419B_label_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrent_98D55E9D4B7251A91351BCAA48AA419B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaap_LiabilitiesCurrent_98D55E9D4B7251A91351BCAA48AA419B" xlink:type="locator" />
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    <link:label id="lab_gsv_TenderOfferAttributeDomain_BD131BD115D48FF57191BCAA484C1D3A_terseLabel_en-US" xlink:label="lab_gsv_TenderOfferAttributeDomain_BD131BD115D48FF57191BCAA484C1D3A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tender offer attribute [Domain]</link:label>
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    <link:label id="lab_gsv_PrincipalMember_0E479441D682CD9FD4AABCAA484C3B62_terseLabel_en-US" xlink:label="lab_gsv_PrincipalMember_0E479441D682CD9FD4AABCAA484C3B62" 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_0E479441D682CD9FD4AABCAA484C3B62_label_en-US" xlink:label="lab_gsv_PrincipalMember_0E479441D682CD9FD4AABCAA484C3B62" 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_0E479441D682CD9FD4AABCAA484C3B62_documentation_en-US" xlink:label="lab_gsv_PrincipalMember_0E479441D682CD9FD4AABCAA484C3B62" 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-20141231.xsd#gsv_PrincipalMember" xlink:label="loc_gsv_PrincipalMember_0E479441D682CD9FD4AABCAA484C3B62" xlink:type="locator" />
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    <link:label id="lab_gsv_AmountOfferedPriorToSettlementDateMember_E5F5297E09A649A25EFEBCAA484CF376_terseLabel_en-US" xlink:label="lab_gsv_AmountOfferedPriorToSettlementDateMember_E5F5297E09A649A25EFEBCAA484CF376" 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_E5F5297E09A649A25EFEBCAA484CF376_label_en-US" xlink:label="lab_gsv_AmountOfferedPriorToSettlementDateMember_E5F5297E09A649A25EFEBCAA484CF376" 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_E5F5297E09A649A25EFEBCAA484CF376_documentation_en-US" xlink:label="lab_gsv_AmountOfferedPriorToSettlementDateMember_E5F5297E09A649A25EFEBCAA484CF376" 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-20141231.xsd#gsv_AmountOfferedPriorToSettlementDateMember" xlink:label="loc_gsv_AmountOfferedPriorToSettlementDateMember_E5F5297E09A649A25EFEBCAA484CF376" xlink:type="locator" />
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    <link:label id="lab_gsv_AmountValidlyTenderedMember_721776C669EF39047BEABCAA484CFB90_terseLabel_en-US" xlink:label="lab_gsv_AmountValidlyTenderedMember_721776C669EF39047BEABCAA484CFB90" 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_721776C669EF39047BEABCAA484CFB90_label_en-US" xlink:label="lab_gsv_AmountValidlyTenderedMember_721776C669EF39047BEABCAA484CFB90" 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_721776C669EF39047BEABCAA484CFB90_documentation_en-US" xlink:label="lab_gsv_AmountValidlyTenderedMember_721776C669EF39047BEABCAA484CFB90" 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-20141231.xsd#gsv_AmountValidlyTenderedMember" xlink:label="loc_gsv_AmountValidlyTenderedMember_721776C669EF39047BEABCAA484CFB90" xlink:type="locator" />
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    <link:label id="lab_gsv_AmountRedeemedAfterTenderMember_57379F2BCDD2DD5A5F68BCAA484C68EC_terseLabel_en-US" xlink:label="lab_gsv_AmountRedeemedAfterTenderMember_57379F2BCDD2DD5A5F68BCAA484C68EC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amount redeemed after tender [Member]</link:label>
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    <link:label id="lab_gsv_AmountRedeemedAfterTenderMember_57379F2BCDD2DD5A5F68BCAA484C68EC_documentation_en-US" xlink:label="lab_gsv_AmountRedeemedAfterTenderMember_57379F2BCDD2DD5A5F68BCAA484C68EC" 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-20141231.xsd#gsv_AmountRedeemedAfterTenderMember" xlink:label="loc_gsv_AmountRedeemedAfterTenderMember_57379F2BCDD2DD5A5F68BCAA484C68EC" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DebtInstrumentAxis_2929CCFC83BB850B6F85BCAA484CEEC9_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentAxis_2929CCFC83BB850B6F85BCAA484CEEC9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument [Axis]</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentAxis_2929CCFC83BB850B6F85BCAA484CEEC9_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentAxis_2929CCFC83BB850B6F85BCAA484CEEC9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="loc_us-gaap_DebtInstrumentAxis_2929CCFC83BB850B6F85BCAA484CEEC9" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DebtInstrumentNameDomain_1E871A4C61BF0F8DA3ECBCAA484C4376_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentNameDomain_1E871A4C61BF0F8DA3ECBCAA484C4376" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument, Name [Domain]</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentNameDomain_1E871A4C61BF0F8DA3ECBCAA484C4376_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentNameDomain_1E871A4C61BF0F8DA3ECBCAA484C4376" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Name [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_1E871A4C61BF0F8DA3ECBCAA484C4376" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_1E871A4C61BF0F8DA3ECBCAA484C4376" xlink:to="lab_us-gaap_DebtInstrumentNameDomain_1E871A4C61BF0F8DA3ECBCAA484C4376" xlink:type="arc" />
    <link:label id="lab_gsv_FixedRateHighYieldBonds775SecuredNotesMember_9B6AA59CF8DF26894CD6BCAA484C9A71_terseLabel_en-US" xlink:label="lab_gsv_FixedRateHighYieldBonds775SecuredNotesMember_9B6AA59CF8DF26894CD6BCAA484C9A71" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fixed Rate - High Yield Bonds, 7.75% Secured Notes [Member]</link:label>
    <link:label id="lab_gsv_FixedRateHighYieldBonds775SecuredNotesMember_9B6AA59CF8DF26894CD6BCAA484C9A71_label_en-US" xlink:label="lab_gsv_FixedRateHighYieldBonds775SecuredNotesMember_9B6AA59CF8DF26894CD6BCAA484C9A71" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fixed Rate - High Yield Bonds, 7.75% Secured Notes [Member]</link:label>
    <link:label id="lab_gsv_FixedRateHighYieldBonds775SecuredNotesMember_9B6AA59CF8DF26894CD6BCAA484C9A71_documentation_en-US" xlink:label="lab_gsv_FixedRateHighYieldBonds775SecuredNotesMember_9B6AA59CF8DF26894CD6BCAA484C9A71" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fixed Rate - High Yield Bonds, 7.75% Secured Notes</link:label>
    <link:loc xlink:href="gsv-20141231.xsd#gsv_FixedRateHighYieldBonds775SecuredNotesMember" xlink:label="loc_gsv_FixedRateHighYieldBonds775SecuredNotesMember_9B6AA59CF8DF26894CD6BCAA484C9A71" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DebtInstrumentLineItems_42E20DBD77DB0712262FBCAA484D566F_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentLineItems_42E20DBD77DB0712262FBCAA484D566F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument [Line Items]</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentLineItems_42E20DBD77DB0712262FBCAA484D566F_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentLineItems_42E20DBD77DB0712262FBCAA484D566F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="loc_us-gaap_DebtInstrumentLineItems_42E20DBD77DB0712262FBCAA484D566F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentLineItems_42E20DBD77DB0712262FBCAA484D566F" xlink:to="lab_us-gaap_DebtInstrumentLineItems_42E20DBD77DB0712262FBCAA484D566F" xlink:type="arc" />
    <link:label id="lab_gsv_TenderOfferAmount_4D289912838A406C3760BCAA484D5BF7_terseLabel_en-US" xlink:label="lab_gsv_TenderOfferAmount_4D289912838A406C3760BCAA484D5BF7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tender Offer Amount</link:label>
    <link:label id="lab_gsv_TenderOfferAmount_4D289912838A406C3760BCAA484D5BF7_label_en-US" xlink:label="lab_gsv_TenderOfferAmount_4D289912838A406C3760BCAA484D5BF7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Tender Offer Amount</link:label>
    <link:label id="lab_gsv_TenderOfferAmount_4D289912838A406C3760BCAA484D5BF7_documentation_en-US" xlink:label="lab_gsv_TenderOfferAmount_4D289912838A406C3760BCAA484D5BF7" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tender Offer Amount</link:label>
    <link:loc xlink:href="gsv-20141231.xsd#gsv_TenderOfferAmount" xlink:label="loc_gsv_TenderOfferAmount_4D289912838A406C3760BCAA484D5BF7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gsv_TenderOfferAmount_4D289912838A406C3760BCAA484D5BF7" xlink:to="lab_gsv_TenderOfferAmount_4D289912838A406C3760BCAA484D5BF7" xlink:type="arc" />
    <link:label id="lab_us-gaap_ExtinguishmentOfDebtAmount_02D610D71FDED1F6C3C8BCAA484D3348_terseLabel_en-US" xlink:label="lab_us-gaap_ExtinguishmentOfDebtAmount_02D610D71FDED1F6C3C8BCAA484D3348" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Principal amount</link:label>
    <link:label id="lab_us-gaap_ExtinguishmentOfDebtAmount_02D610D71FDED1F6C3C8BCAA484D3348_label_en-US" xlink:label="lab_us-gaap_ExtinguishmentOfDebtAmount_02D610D71FDED1F6C3C8BCAA484D3348" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Extinguishment of Debt, Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ExtinguishmentOfDebtAmount" xlink:label="loc_us-gaap_ExtinguishmentOfDebtAmount_02D610D71FDED1F6C3C8BCAA484D3348" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ExtinguishmentOfDebtAmount_02D610D71FDED1F6C3C8BCAA484D3348" xlink:to="lab_us-gaap_ExtinguishmentOfDebtAmount_02D610D71FDED1F6C3C8BCAA484D3348" xlink:type="arc" />
    <link:label id="lab_gsv_StockIssuedDuringPeriodValueNonCashRetirementofDebtExchangedforMembersEquity_2B7BB34850105B298C93BCAA484D8E33_terseLabel_en-US" xlink:label="lab_gsv_StockIssuedDuringPeriodValueNonCashRetirementofDebtExchangedforMembersEquity_2B7BB34850105B298C93BCAA484D8E33" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equity contribution&#8212;7.75% Secured Notes from affiliate</link:label>
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    <link:loc xlink:href="gsv-20141231.xsd#gsv_StockIssuedDuringPeriodValueNonCashRetirementofDebtExchangedforMembersEquity" xlink:label="loc_gsv_StockIssuedDuringPeriodValueNonCashRetirementofDebtExchangedforMembersEquity_2B7BB34850105B298C93BCAA484D8E33" xlink:type="locator" />
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    <link:label id="lab_us-gaap_RepaymentsOfOtherLongTermDebt_61DF54F57920C7D67CD6BCAA484D45B2_terseLabel_en-US" xlink:label="lab_us-gaap_RepaymentsOfOtherLongTermDebt_61DF54F57920C7D67CD6BCAA484D45B2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash Paid</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RepaymentsOfOtherLongTermDebt" xlink:label="loc_us-gaap_RepaymentsOfOtherLongTermDebt_61DF54F57920C7D67CD6BCAA484D45B2" xlink:type="locator" />
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    <link:label id="lab_gsv_A2012SecuredNotesTrancheMember_7570C81BCCB8FBB7CBB4BCAA4856EC8F_terseLabel_en-US" xlink:label="lab_gsv_A2012SecuredNotesTrancheMember_7570C81BCCB8FBB7CBB4BCAA4856EC8F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2012 secured notes tranche A [Member]</link:label>
    <link:label id="lab_gsv_A2012SecuredNotesTrancheMember_7570C81BCCB8FBB7CBB4BCAA4856EC8F_label_en-US" xlink:label="lab_gsv_A2012SecuredNotesTrancheMember_7570C81BCCB8FBB7CBB4BCAA4856EC8F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">2012 secured notes tranche A [Member]</link:label>
    <link:label id="lab_gsv_A2012SecuredNotesTrancheMember_7570C81BCCB8FBB7CBB4BCAA4856EC8F_documentation_en-US" xlink:label="lab_gsv_A2012SecuredNotesTrancheMember_7570C81BCCB8FBB7CBB4BCAA4856EC8F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">2012 secured notes tranche A [Member]</link:label>
    <link:loc xlink:href="gsv-20141231.xsd#gsv_A2012SecuredNotesTrancheMember" xlink:label="loc_gsv_A2012SecuredNotesTrancheMember_7570C81BCCB8FBB7CBB4BCAA4856EC8F" xlink:type="locator" />
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    <link:label id="lab_gsv_A2012SecuredNotesTrancheBMember_2A585078A541CB7EE45CBCAA48567736_terseLabel_en-US" xlink:label="lab_gsv_A2012SecuredNotesTrancheBMember_2A585078A541CB7EE45CBCAA48567736" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2012 secured notes tranche B [Member]</link:label>
    <link:label id="lab_gsv_A2012SecuredNotesTrancheBMember_2A585078A541CB7EE45CBCAA48567736_label_en-US" xlink:label="lab_gsv_A2012SecuredNotesTrancheBMember_2A585078A541CB7EE45CBCAA48567736" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">2012 secured notes tranche B [Member]</link:label>
    <link:label id="lab_gsv_A2012SecuredNotesTrancheBMember_2A585078A541CB7EE45CBCAA48567736_documentation_en-US" xlink:label="lab_gsv_A2012SecuredNotesTrancheBMember_2A585078A541CB7EE45CBCAA48567736" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">2012 secured notes tranche B [Member]</link:label>
    <link:loc xlink:href="gsv-20141231.xsd#gsv_A2012SecuredNotesTrancheBMember" xlink:label="loc_gsv_A2012SecuredNotesTrancheBMember_2A585078A541CB7EE45CBCAA48567736" xlink:type="locator" />
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    <link:label id="lab_gsv_FixedRateHighYieldBonds7Point75PercentSecuredNotesMember_D52866A31AE935DFD676BCAA485696EA_terseLabel_en-US" xlink:label="lab_gsv_FixedRateHighYieldBonds7Point75PercentSecuredNotesMember_D52866A31AE935DFD676BCAA485696EA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fixed Rate - High Yield Bonds, 7.75% Secured Notes [Member]</link:label>
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    <link:label id="lab_gsv_A2012SecuredNotesMember_963F8EBB3AB3790ED31CBCAA485683CA_terseLabel_en-US" xlink:label="lab_gsv_A2012SecuredNotesMember_963F8EBB3AB3790ED31CBCAA485683CA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2012 Secured Notes [Member]</link:label>
    <link:label id="lab_gsv_A2012SecuredNotesMember_963F8EBB3AB3790ED31CBCAA485683CA_label_en-US" xlink:label="lab_gsv_A2012SecuredNotesMember_963F8EBB3AB3790ED31CBCAA485683CA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">2012 Secured Notes [Member]</link:label>
    <link:label id="lab_gsv_A2012SecuredNotesMember_963F8EBB3AB3790ED31CBCAA485683CA_documentation_en-US" xlink:label="lab_gsv_A2012SecuredNotesMember_963F8EBB3AB3790ED31CBCAA485683CA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">2012 Secured Notes [Member]</link:label>
    <link:loc xlink:href="gsv-20141231.xsd#gsv_A2012SecuredNotesMember" xlink:label="loc_gsv_A2012SecuredNotesMember_963F8EBB3AB3790ED31CBCAA485683CA" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DebtAndCapitalLeaseObligations_232231C9A477BCB2884ABCAA48568385_terseLabel_en-US" xlink:label="lab_us-gaap_DebtAndCapitalLeaseObligations_232231C9A477BCB2884ABCAA48568385" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total debt and other obligations</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtAndCapitalLeaseObligations" xlink:label="loc_us-gaap_DebtAndCapitalLeaseObligations_232231C9A477BCB2884ABCAA48568385" xlink:type="locator" />
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    <link:label id="lab_gsv_DebtCovenantTradePayableRestrictionOfEquipmentLandorOtherPropertyAmount_3B210652B1F9B6CE1B86BCAA4857D9F9_terseLabel_en-US" xlink:label="lab_gsv_DebtCovenantTradePayableRestrictionOfEquipmentLandorOtherPropertyAmount_3B210652B1F9B6CE1B86BCAA4857D9F9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt covenant, trade payable restriction of equipment, land or other property, amount</link:label>
    <link:label id="lab_gsv_DebtCovenantTradePayableRestrictionOfEquipmentLandorOtherPropertyAmount_3B210652B1F9B6CE1B86BCAA4857D9F9_label_en-US" xlink:label="lab_gsv_DebtCovenantTradePayableRestrictionOfEquipmentLandorOtherPropertyAmount_3B210652B1F9B6CE1B86BCAA4857D9F9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Covenant, Trade Payable Restriction Of Equipment, Land or Other Property, Amount</link:label>
    <link:label id="lab_gsv_DebtCovenantTradePayableRestrictionOfEquipmentLandorOtherPropertyAmount_3B210652B1F9B6CE1B86BCAA4857D9F9_documentation_en-US" xlink:label="lab_gsv_DebtCovenantTradePayableRestrictionOfEquipmentLandorOtherPropertyAmount_3B210652B1F9B6CE1B86BCAA4857D9F9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt Covenant, Trade Payable Restriction Of Equipment, Land or Other Property, Amount</link:label>
    <link:loc xlink:href="gsv-20141231.xsd#gsv_DebtCovenantTradePayableRestrictionOfEquipmentLandorOtherPropertyAmount" xlink:label="loc_gsv_DebtCovenantTradePayableRestrictionOfEquipmentLandorOtherPropertyAmount_3B210652B1F9B6CE1B86BCAA4857D9F9" xlink:type="locator" />
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    <link:label id="lab_gsv_DebtCovenantDebttoAdjustedConsolidatedCashFlow_93E1C12709857CF97691BCAA485779A1_terseLabel_en-US" xlink:label="lab_gsv_DebtCovenantDebttoAdjustedConsolidatedCashFlow_93E1C12709857CF97691BCAA485779A1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt covenant, debt to adjusted consolidated cash flow</link:label>
    <link:label id="lab_gsv_DebtCovenantDebttoAdjustedConsolidatedCashFlow_93E1C12709857CF97691BCAA485779A1_label_en-US" xlink:label="lab_gsv_DebtCovenantDebttoAdjustedConsolidatedCashFlow_93E1C12709857CF97691BCAA485779A1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Covenant, Debt to Adjusted Consolidated Cash Flow</link:label>
    <link:label id="lab_gsv_DebtCovenantDebttoAdjustedConsolidatedCashFlow_93E1C12709857CF97691BCAA485779A1_documentation_en-US" xlink:label="lab_gsv_DebtCovenantDebttoAdjustedConsolidatedCashFlow_93E1C12709857CF97691BCAA485779A1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt Covenant, Debt to Adjusted Consolidated Cash Flow</link:label>
    <link:loc xlink:href="gsv-20141231.xsd#gsv_DebtCovenantDebttoAdjustedConsolidatedCashFlow" xlink:label="loc_gsv_DebtCovenantDebttoAdjustedConsolidatedCashFlow_93E1C12709857CF97691BCAA485779A1" xlink:type="locator" />
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    <link:label id="lab_gsv_DebttoAdjustedCashFlowRatio_F0E6AA2142799C53BEE2BCAA485787BF_terseLabel_en-US" xlink:label="lab_gsv_DebttoAdjustedCashFlowRatio_F0E6AA2142799C53BEE2BCAA485787BF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt to adjusted cash flow ratio</link:label>
    <link:label id="lab_gsv_DebttoAdjustedCashFlowRatio_F0E6AA2142799C53BEE2BCAA485787BF_label_en-US" xlink:label="lab_gsv_DebttoAdjustedCashFlowRatio_F0E6AA2142799C53BEE2BCAA485787BF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt to Adjusted Cash Flow Ratio</link:label>
    <link:label id="lab_gsv_DebttoAdjustedCashFlowRatio_F0E6AA2142799C53BEE2BCAA485787BF_documentation_en-US" xlink:label="lab_gsv_DebttoAdjustedCashFlowRatio_F0E6AA2142799C53BEE2BCAA485787BF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt to Adjusted Cash Flow Ratio</link:label>
    <link:loc xlink:href="gsv-20141231.xsd#gsv_DebttoAdjustedCashFlowRatio" xlink:label="loc_gsv_DebttoAdjustedCashFlowRatio_F0E6AA2142799C53BEE2BCAA485787BF" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DebtInstrumentFaceAmount_859BEF1B9266E9FBAFBFBCAA485709E5_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentFaceAmount_859BEF1B9266E9FBAFBFBCAA485709E5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Face amount of debt instrument</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentFaceAmount_859BEF1B9266E9FBAFBFBCAA485709E5_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentFaceAmount_859BEF1B9266E9FBAFBFBCAA485709E5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Face Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_859BEF1B9266E9FBAFBFBCAA485709E5" xlink:type="locator" />
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    <link:label id="lab_us-gaap_InterestExpenseDebt_84DF8B08E662CFF5445CBCAA4847BE09_terseLabel_en-US" xlink:label="lab_us-gaap_InterestExpenseDebt_84DF8B08E662CFF5445CBCAA4847BE09" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest expense on debt obligations</link:label>
    <link:label id="lab_us-gaap_InterestExpenseDebt_84DF8B08E662CFF5445CBCAA4847BE09_label_en-US" xlink:label="lab_us-gaap_InterestExpenseDebt_84DF8B08E662CFF5445CBCAA4847BE09" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest Expense, Debt</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_InterestExpenseDebt" xlink:label="loc_us-gaap_InterestExpenseDebt_84DF8B08E662CFF5445CBCAA4847BE09" xlink:type="locator" />
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    <link:label id="lab_us-gaap_AmortizationOfFinancingCosts_2EA0430E06809B9D4D5FBCAA48470A43_terseLabel_en-US" xlink:label="lab_us-gaap_AmortizationOfFinancingCosts_2EA0430E06809B9D4D5FBCAA48470A43" 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_us-gaap_AmortizationOfFinancingCosts_2EA0430E06809B9D4D5FBCAA48470A43_label_en-US" xlink:label="lab_us-gaap_AmortizationOfFinancingCosts_2EA0430E06809B9D4D5FBCAA48470A43" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amortization of Financing Costs</link:label>
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    <link:label id="lab_us-gaap_AmortizationOfDebtDiscountPremium_64FA6E459DCCCEB5D602BCAA4847370C_terseLabel_en-US" xlink:label="lab_us-gaap_AmortizationOfDebtDiscountPremium_64FA6E459DCCCEB5D602BCAA4847370C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortization of adjustments on long-term debt</link:label>
    <link:label id="lab_us-gaap_AmortizationOfDebtDiscountPremium_64FA6E459DCCCEB5D602BCAA4847370C_label_en-US" xlink:label="lab_us-gaap_AmortizationOfDebtDiscountPremium_64FA6E459DCCCEB5D602BCAA4847370C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amortization of Debt Discount (Premium)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AmortizationOfDebtDiscountPremium" xlink:label="loc_us-gaap_AmortizationOfDebtDiscountPremium_64FA6E459DCCCEB5D602BCAA4847370C" xlink:type="locator" />
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    <link:label id="lab_gsv_InterestExpenseAndAmortizationOfDeferredFinancingCosts_37D4D0BA5E81222741E7BCAA4847C8F9_terseLabel_en-US" xlink:label="lab_gsv_InterestExpenseAndAmortizationOfDeferredFinancingCosts_37D4D0BA5E81222741E7BCAA4847C8F9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_gsv_InterestExpenseAndAmortizationOfDeferredFinancingCosts_37D4D0BA5E81222741E7BCAA4847C8F9_label_en-US" xlink:label="lab_gsv_InterestExpenseAndAmortizationOfDeferredFinancingCosts_37D4D0BA5E81222741E7BCAA4847C8F9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest expense and amortization of deferred financing costs</link:label>
    <link:label id="lab_gsv_InterestExpenseAndAmortizationOfDeferredFinancingCosts_37D4D0BA5E81222741E7BCAA4847C8F9_documentation_en-US" xlink:label="lab_gsv_InterestExpenseAndAmortizationOfDeferredFinancingCosts_37D4D0BA5E81222741E7BCAA4847C8F9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The cost of borrowed funds and the amortization of interest rate swaps accounted for as interest that was charged against earnings during the period.</link:label>
    <link:loc xlink:href="gsv-20141231.xsd#gsv_InterestExpenseAndAmortizationOfDeferredFinancingCosts" xlink:label="loc_gsv_InterestExpenseAndAmortizationOfDeferredFinancingCosts_37D4D0BA5E81222741E7BCAA4847C8F9" xlink:type="locator" />
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    <link:label id="lab_us-gaap_RelatedPartyTransactionLineItems_DA13F19BBBB4D072E21FBCB612541242_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionLineItems_DA13F19BBBB4D072E21FBCB612541242" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Related Party Transaction [Line Items]</link:label>
    <link:label id="lab_us-gaap_RelatedPartyTransactionLineItems_DA13F19BBBB4D072E21FBCB612541242_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionLineItems_DA13F19BBBB4D072E21FBCB612541242" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Related Party Transaction [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RelatedPartyTransactionLineItems" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_DA13F19BBBB4D072E21FBCB612541242" xlink:type="locator" />
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    <link:label id="lab_gsv_ManagementFeeExpenseRelatedParty_B379F75FB2946DF0B3DEBCB61255A890_verboseLabel_en-US" xlink:label="lab_gsv_ManagementFeeExpenseRelatedParty_B379F75FB2946DF0B3DEBCB61255A890" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Management Fee</link:label>
    <link:label id="lab_gsv_ManagementFeeExpenseRelatedParty_B379F75FB2946DF0B3DEBCB61255A890_label_en-US" xlink:label="lab_gsv_ManagementFeeExpenseRelatedParty_B379F75FB2946DF0B3DEBCB61255A890" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Management Fee Expense Related Party</link:label>
    <link:label id="lab_gsv_ManagementFeeExpenseRelatedParty_B379F75FB2946DF0B3DEBCB61255A890_documentation_en-US" xlink:label="lab_gsv_ManagementFeeExpenseRelatedParty_B379F75FB2946DF0B3DEBCB61255A890" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of expenses charged by affiliate related to the management services to maintain, market, operate, manage and administer the towers.</link:label>
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    <link:label id="lab_gsv_DirectCostsOfLeasedAndRentedPropertyOrEquipmentRelatedParty_D54A925DCDEA7A56D4D9BCB612553DD2_verboseLabel_en-US" xlink:label="lab_gsv_DirectCostsOfLeasedAndRentedPropertyOrEquipmentRelatedParty_D54A925DCDEA7A56D4D9BCB612553DD2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Direct Costs of Leased and Rented Property or Equipment, Related Party</link:label>
    <link:label id="lab_gsv_DirectCostsOfLeasedAndRentedPropertyOrEquipmentRelatedParty_D54A925DCDEA7A56D4D9BCB612553DD2_label_en-US" xlink:label="lab_gsv_DirectCostsOfLeasedAndRentedPropertyOrEquipmentRelatedParty_D54A925DCDEA7A56D4D9BCB612553DD2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Direct Costs of Leased and Rented Property or Equipment, Related Party</link:label>
    <link:label id="lab_gsv_DirectCostsOfLeasedAndRentedPropertyOrEquipmentRelatedParty_D54A925DCDEA7A56D4D9BCB612553DD2_documentation_en-US" xlink:label="lab_gsv_DirectCostsOfLeasedAndRentedPropertyOrEquipmentRelatedParty_D54A925DCDEA7A56D4D9BCB612553DD2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Costs incurred with related parties that are directly related to generating revenues from leased and rented property or equipment.</link:label>
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    <link:label id="lab_gsv_RentRevenueofLeasedandRentedPropertyorEquipmentRelatedParty_66D244706DF55DB75AB5BCB612551CBA_terseLabel_en-US" xlink:label="lab_gsv_RentRevenueofLeasedandRentedPropertyorEquipmentRelatedParty_66D244706DF55DB75AB5BCB612551CBA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Rent Revenue of Leased and Rented Property or Equipment, Related Party</link:label>
    <link:label id="lab_gsv_RentRevenueofLeasedandRentedPropertyorEquipmentRelatedParty_66D244706DF55DB75AB5BCB612551CBA_label_en-US" xlink:label="lab_gsv_RentRevenueofLeasedandRentedPropertyorEquipmentRelatedParty_66D244706DF55DB75AB5BCB612551CBA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Rent Revenue of Leased and Rented Property or Equipment, Related Party</link:label>
    <link:label id="lab_gsv_RentRevenueofLeasedandRentedPropertyorEquipmentRelatedParty_66D244706DF55DB75AB5BCB612551CBA_documentation_en-US" xlink:label="lab_gsv_RentRevenueofLeasedandRentedPropertyorEquipmentRelatedParty_66D244706DF55DB75AB5BCB612551CBA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Rent Revenue of Leased and Rented Property or Equipment, Related Party</link:label>
    <link:loc xlink:href="gsv-20141231.xsd#gsv_RentRevenueofLeasedandRentedPropertyorEquipmentRelatedParty" xlink:label="loc_gsv_RentRevenueofLeasedandRentedPropertyorEquipmentRelatedParty_66D244706DF55DB75AB5BCB612551CBA" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ExtinguishmentOfDebtAmount_6AE1447BD9D9885BF98ABCB61255C2F7_verboseLabel_en-US" xlink:label="lab_us-gaap_ExtinguishmentOfDebtAmount_6AE1447BD9D9885BF98ABCB61255C2F7" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Principal amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ExtinguishmentOfDebtAmount" xlink:label="loc_us-gaap_ExtinguishmentOfDebtAmount_6AE1447BD9D9885BF98ABCB61255C2F7" xlink:type="locator" />
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    <link:label id="lab_gsv_StockIssuedDuringPeriodValueNonCashRetirementofDebtExchangedforMembersEquity_A6347F9BFAC538CA7FA9BCB612557F7E_verboseLabel_en-US" xlink:label="lab_gsv_StockIssuedDuringPeriodValueNonCashRetirementofDebtExchangedforMembersEquity_A6347F9BFAC538CA7FA9BCB612557F7E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Stock Issued During Period, Value, Non-Cash Retirement of Debt Exchanged for Members Equity</link:label>
    <link:loc xlink:href="gsv-20141231.xsd#gsv_StockIssuedDuringPeriodValueNonCashRetirementofDebtExchangedforMembersEquity" xlink:label="loc_gsv_StockIssuedDuringPeriodValueNonCashRetirementofDebtExchangedforMembersEquity_A6347F9BFAC538CA7FA9BCB612557F7E" xlink:type="locator" />
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    <link:label id="lab_gsv_InterestExpenseAndAmortizationOfDeferredFinancingCostsRelatedParty_3E071C558AC9AD0B43E2BCB61255013E_negatedLabel_en-US" xlink:label="lab_gsv_InterestExpenseAndAmortizationOfDeferredFinancingCostsRelatedParty_3E071C558AC9AD0B43E2BCB61255013E" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Interest Expense and Amortization of Deferred Financing Costs, Related Party</link:label>
    <link:label id="lab_gsv_InterestExpenseAndAmortizationOfDeferredFinancingCostsRelatedParty_3E071C558AC9AD0B43E2BCB61255013E_label_en-US" xlink:label="lab_gsv_InterestExpenseAndAmortizationOfDeferredFinancingCostsRelatedParty_3E071C558AC9AD0B43E2BCB61255013E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest Expense and Amortization of Deferred Financing Costs, Related Party</link:label>
    <link:label id="lab_gsv_InterestExpenseAndAmortizationOfDeferredFinancingCostsRelatedParty_3E071C558AC9AD0B43E2BCB61255013E_documentation_en-US" xlink:label="lab_gsv_InterestExpenseAndAmortizationOfDeferredFinancingCostsRelatedParty_3E071C558AC9AD0B43E2BCB61255013E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The cost incurred with third parties for borrowed funds and the amortization of deferred financing costs accounted for as interest that was charged against earnings during the period.</link:label>
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    <link:label id="lab_us-gaap_DistributionMadeToLimitedLiabilityCompanyLLCMemberCashDistributionsPaid_118A0CDE5BDC73E68790BCB6125507FB_negatedLabel_en-US" xlink:label="lab_us-gaap_DistributionMadeToLimitedLiabilityCompanyLLCMemberCashDistributionsPaid_118A0CDE5BDC73E68790BCB6125507FB" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Distribution Made to Limited Liability Company (LLC) Member, Cash Distributions Paid</link:label>
    <link:label id="lab_us-gaap_DistributionMadeToLimitedLiabilityCompanyLLCMemberCashDistributionsPaid_118A0CDE5BDC73E68790BCB6125507FB_label_en-US" xlink:label="lab_us-gaap_DistributionMadeToLimitedLiabilityCompanyLLCMemberCashDistributionsPaid_118A0CDE5BDC73E68790BCB6125507FB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Distribution Made to Limited Liability Company (LLC) Member, Cash Distributions Paid</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DistributionMadeToLimitedLiabilityCompanyLLCMemberCashDistributionsPaid" xlink:label="loc_us-gaap_DistributionMadeToLimitedLiabilityCompanyLLCMemberCashDistributionsPaid_118A0CDE5BDC73E68790BCB6125507FB" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_85BD92066B21DB1CB1C5BCAA48341670_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_85BD92066B21DB1CB1C5BCAA48341670" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Benefit (Provision) for Income Taxes</link:label>
    <link:label id="lab_us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_85BD92066B21DB1CB1C5BCAA48341670_label_en-US" xlink:label="lab_us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_85BD92066B21DB1CB1C5BCAA48341670" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_85BD92066B21DB1CB1C5BCAA48341670" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock_76FBD427AECBBA3CBF30BCAA4834F8E1" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_E05196D4E116FDB02B5DBCAA48706C5A_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_E05196D4E116FDB02B5DBCAA48706C5A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Property, Plant and Equipment [Table]</link:label>
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    <link:label id="lab_us-gaap_LandMember_B8B4A0B4FA8AA0B7A492BCAA48716F1C_terseLabel_en-US" xlink:label="lab_us-gaap_LandMember_B8B4A0B4FA8AA0B7A492BCAA48716F1C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Land [Member]</link:label>
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    <link:label id="lab_gsv_WirelessInfrastructureMember_B1B4D783241B4ECFD410BCAA4871A92F_documentation_en-US" xlink:label="lab_gsv_WirelessInfrastructureMember_B1B4D783241B4ECFD410BCAA4871A92F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Wireless infrastructure</link:label>
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    <link:label id="lab_us-gaap_ConstructionInProgressMember_61FAF3EA7561AB56EDC6BCAA48710838_terseLabel_en-US" xlink:label="lab_us-gaap_ConstructionInProgressMember_61FAF3EA7561AB56EDC6BCAA48710838" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Construction in Process [Member]</link:label>
    <link:label id="lab_us-gaap_ConstructionInProgressMember_61FAF3EA7561AB56EDC6BCAA48710838_label_en-US" xlink:label="lab_us-gaap_ConstructionInProgressMember_61FAF3EA7561AB56EDC6BCAA48710838" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Construction in Progress [Member]</link:label>
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    <link:label id="lab_us-gaap_IncreaseDecreaseDueFromAffiliates_88A0B8B0F8267A2F0B38BCAA488B4EE0_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseDueFromAffiliates_88A0B8B0F8267A2F0B38BCAA488B4EE0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equity distribution</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseDueFromAffiliates_88A0B8B0F8267A2F0B38BCAA488B4EE0" xlink:to="lab_us-gaap_IncreaseDecreaseDueFromAffiliates_88A0B8B0F8267A2F0B38BCAA488B4EE0" xlink:type="arc" />
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    <link:label id="lab_us-gaap_ProfitLoss_B3F21DC119CA09AD7933BCAA488B0A6B_label_en-US" xlink:label="lab_us-gaap_ProfitLoss_B3F21DC119CA09AD7933BCAA488B0A6B" 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>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProfitLoss_B3F21DC119CA09AD7933BCAA488B0A6B" xlink:to="lab_us-gaap_ProfitLoss_B3F21DC119CA09AD7933BCAA488B0A6B" xlink:type="arc" />
    <link:label id="lab_us-gaap_MembersEquity_01E9886826C2F369E6A5BCAA488BDC1A_periodEndLabel_en-US" xlink:label="lab_us-gaap_MembersEquity_01E9886826C2F369E6A5BCAA488BDC1A" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Balance, ending</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_MembersEquity" xlink:label="loc_us-gaap_MembersEquity_01E9886826C2F369E6A5BCAA488BDC1A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MembersEquity_01E9886826C2F369E6A5BCAA488BDC1A" xlink:to="lab_us-gaap_MembersEquity_01E9886826C2F369E6A5BCAA488BDC1A" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementOfCashFlowsAbstract_F6BF99E8EA1991CE6855BCAA4893DDFA_label_en-US" xlink:label="lab_us-gaap_StatementOfCashFlowsAbstract_F6BF99E8EA1991CE6855BCAA4893DDFA" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="loc_us-gaap_StatementOfCashFlowsAbstract_F6BF99E8EA1991CE6855BCAA4893DDFA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_F6BF99E8EA1991CE6855BCAA4893DDFA" xlink:to="lab_us-gaap_StatementOfCashFlowsAbstract_F6BF99E8EA1991CE6855BCAA4893DDFA" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_133CE7473DC711F8CCE6BCAA4893E82F_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_133CE7473DC711F8CCE6BCAA4893E82F" 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_133CE7473DC711F8CCE6BCAA4893E82F_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_133CE7473DC711F8CCE6BCAA4893E82F" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_133CE7473DC711F8CCE6BCAA4893E82F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_133CE7473DC711F8CCE6BCAA4893E82F" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_133CE7473DC711F8CCE6BCAA4893E82F" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProfitLoss_4D3E672A3F6E02A20191BCAA4894A32E_verboseLabel_en-US" xlink:label="lab_us-gaap_ProfitLoss_4D3E672A3F6E02A20191BCAA4894A32E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Net income (loss)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss_4D3E672A3F6E02A20191BCAA4894A32E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProfitLoss_4D3E672A3F6E02A20191BCAA4894A32E" xlink:to="lab_us-gaap_ProfitLoss_4D3E672A3F6E02A20191BCAA4894A32E" xlink:type="arc" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_71815661822BF4D4B8EABCAA489494F6" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DepreciationAmortizationAndAccretionNet_84DCAE6883260E6DF28FBCAA4894A008_terseLabel_en-US" xlink:label="lab_us-gaap_DepreciationAmortizationAndAccretionNet_84DCAE6883260E6DF28FBCAA4894A008" 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_84DCAE6883260E6DF28FBCAA4894A008_label_en-US" xlink:label="lab_us-gaap_DepreciationAmortizationAndAccretionNet_84DCAE6883260E6DF28FBCAA4894A008" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DepreciationAmortizationAndAccretionNet" xlink:label="loc_us-gaap_DepreciationAmortizationAndAccretionNet_84DCAE6883260E6DF28FBCAA4894A008" xlink:type="locator" />
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    <link:label id="lab_gsv_AmortizationOfDeferredFinancingCostsAndOtherNoncashInterest_8E50126BCCDD38EC0857BCAA4894D308_terseLabel_en-US" xlink:label="lab_gsv_AmortizationOfDeferredFinancingCostsAndOtherNoncashInterest_8E50126BCCDD38EC0857BCAA4894D308" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortization of deferred financing costs and other non-cash interest on long-term debt</link:label>
    <link:label id="lab_gsv_AmortizationOfDeferredFinancingCostsAndOtherNoncashInterest_8E50126BCCDD38EC0857BCAA4894D308_label_en-US" xlink:label="lab_gsv_AmortizationOfDeferredFinancingCostsAndOtherNoncashInterest_8E50126BCCDD38EC0857BCAA4894D308" 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_8E50126BCCDD38EC0857BCAA4894D308_documentation_en-US" xlink:label="lab_gsv_AmortizationOfDeferredFinancingCostsAndOtherNoncashInterest_8E50126BCCDD38EC0857BCAA4894D308" 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-20141231.xsd#gsv_AmortizationOfDeferredFinancingCostsAndOtherNoncashInterest" xlink:label="loc_gsv_AmortizationOfDeferredFinancingCostsAndOtherNoncashInterest_8E50126BCCDD38EC0857BCAA4894D308" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gsv_AmortizationOfDeferredFinancingCostsAndOtherNoncashInterest_8E50126BCCDD38EC0857BCAA4894D308" xlink:to="lab_gsv_AmortizationOfDeferredFinancingCostsAndOtherNoncashInterest_8E50126BCCDD38EC0857BCAA4894D308" xlink:type="arc" />
    <link:label id="lab_us-gaap_DeferredIncomeTaxExpenseBenefit_A7998A8F98C4C5E2B30DBCAA48949974_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxExpenseBenefit_A7998A8F98C4C5E2B30DBCAA48949974" 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_A7998A8F98C4C5E2B30DBCAA48949974_label_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxExpenseBenefit_A7998A8F98C4C5E2B30DBCAA48949974" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_A7998A8F98C4C5E2B30DBCAA48949974" xlink:type="locator" />
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    <link:label id="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_B08EFB86C6333FB09F67BCAA4894FD00_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_B08EFB86C6333FB09F67BCAA4894FD00" 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_B08EFB86C6333FB09F67BCAA4894FD00_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_B08EFB86C6333FB09F67BCAA4894FD00" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_B08EFB86C6333FB09F67BCAA4894FD00" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_B08EFB86C6333FB09F67BCAA4894FD00" xlink:to="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_B08EFB86C6333FB09F67BCAA4894FD00" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInInterestPayableNet_8CEE37F9C800CEA2617BBCAA48943FB2_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInInterestPayableNet_8CEE37F9C800CEA2617BBCAA48943FB2" 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_8CEE37F9C800CEA2617BBCAA48943FB2_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInInterestPayableNet_8CEE37F9C800CEA2617BBCAA48943FB2" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncreaseDecreaseInInterestPayableNet" xlink:label="loc_us-gaap_IncreaseDecreaseInInterestPayableNet_8CEE37F9C800CEA2617BBCAA48943FB2" xlink:type="locator" />
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    <link:label id="lab_us-gaap_IncreaseDecreaseInAccountsPayableTrade_ED12D8C79D5FEBCE7EB2BCAA4894C55D_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsPayableTrade_ED12D8C79D5FEBCE7EB2BCAA4894C55D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Increase (decrease) in accounts payable</link:label>
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    <link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_23CE285C016666BB391BBCAA48947B08_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_23CE285C016666BB391BBCAA48947B08" 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_23CE285C016666BB391BBCAA48947B08_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_23CE285C016666BB391BBCAA48947B08" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_23CE285C016666BB391BBCAA48947B08" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_23CE285C016666BB391BBCAA48947B08" xlink:to="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_23CE285C016666BB391BBCAA48947B08" xlink:type="arc" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncreaseDecreaseInReceivables" xlink:label="loc_us-gaap_IncreaseDecreaseInReceivables_6582E0C1621ABB222FC7BCAA4894C331" xlink:type="locator" />
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    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_EE3A65731608FA795520BCAA4894D5DC_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_EE3A65731608FA795520BCAA4894D5DC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Operating Activities</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_EE3A65731608FA795520BCAA4894D5DC" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_EE3A65731608FA795520BCAA4894D5DC" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_56393EE5E800C4533C02BCAA48956F0E_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_56393EE5E800C4533C02BCAA48956F0E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash flows from investing activities:</link:label>
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    <link:label id="lab_us-gaap_PaymentsToAcquireProductiveAssets_81D1349F1EE2B6CA4810BCAA48950A0E_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireProductiveAssets_81D1349F1EE2B6CA4810BCAA48950A0E" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Capital expenditures</link:label>
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    <link:label id="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_8BD02FC2AB847274305EBCAA48950F17_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_8BD02FC2AB847274305EBCAA48950F17" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Other investing activities</link:label>
    <link:label id="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_8BD02FC2AB847274305EBCAA48950F17_label_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_8BD02FC2AB847274305EBCAA48950F17" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments for (Proceeds from) Other Investing Activities</link:label>
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    <link:label id="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_533B4A57F0A03F35DBCDBCAA4895AC54_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_533B4A57F0A03F35DBCDBCAA4895AC54" 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>
    <link:label id="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_533B4A57F0A03F35DBCDBCAA4895AC54_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_533B4A57F0A03F35DBCDBCAA4895AC54" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments to Acquire Businesses, Net of Cash Acquired</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_533B4A57F0A03F35DBCDBCAA4895AC54" xlink:to="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_533B4A57F0A03F35DBCDBCAA4895AC54" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_E7E2791FC764196B01A4BCAA4895D778_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_E7E2791FC764196B01A4BCAA4895D778" 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>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_E7E2791FC764196B01A4BCAA4895D778_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_E7E2791FC764196B01A4BCAA4895D778" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Investing Activities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_E7E2791FC764196B01A4BCAA4895D778" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_E7E2791FC764196B01A4BCAA4895D778" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_E7E2791FC764196B01A4BCAA4895D778" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_BDEBE7E2DF16D7892A25BCAA48956006_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_BDEBE7E2DF16D7892A25BCAA48956006" 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_BDEBE7E2DF16D7892A25BCAA48956006_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_BDEBE7E2DF16D7892A25BCAA48956006" 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>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_BDEBE7E2DF16D7892A25BCAA48956006" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_BDEBE7E2DF16D7892A25BCAA48956006" xlink:to="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_BDEBE7E2DF16D7892A25BCAA48956006" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_7A2EB1330FD808595BC5BCAA4895FCBE_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_7A2EB1330FD808595BC5BCAA4895FCBE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from issuance of long-term debt</link:label>
    <link:label id="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_7A2EB1330FD808595BC5BCAA4895FCBE_label_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_7A2EB1330FD808595BC5BCAA4895FCBE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Issuance of Long-term Debt</link:label>
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    <link:label id="lab_us-gaap_RepaymentsOfLongTermDebt_E0B6728818BB5D28E63EBCAA4895C520_negatedLabel_en-US" xlink:label="lab_us-gaap_RepaymentsOfLongTermDebt_E0B6728818BB5D28E63EBCAA4895C520" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Purchases and redemptions of long-term debt</link:label>
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    <link:label id="lab_gsv_IncreaseDecreaseInDueFromAffiliatesFinancingActivities_F93D56A35438BE41EC5CBCAA4895AE8C_negatedTerseLabel_en-US" xlink:label="lab_gsv_IncreaseDecreaseInDueFromAffiliatesFinancingActivities_F93D56A35438BE41EC5CBCAA4895AE8C" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Net (increase) decrease in amount due from affiliates</link:label>
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    <link:loc xlink:href="gsv-20141231.xsd#gsv_GreaterThan10YearsInclusiveOfRenewalsAtCompanysOptionMember" xlink:label="loc_gsv_GreaterThan10YearsInclusiveOfRenewalsAtCompanysOptionMember_7B9F71C1968B0E3A78D1BCAA481806BB" xlink:type="locator" />
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    <link:label id="lab_gsv_GreaterThan20YearsInclusiveOfRenewalsAtCompanysOptionMember_16D99828B51C45200FDCBCAA4818B31D_terseLabel_en-US" xlink:label="lab_gsv_GreaterThan20YearsInclusiveOfRenewalsAtCompanysOptionMember_16D99828B51C45200FDCBCAA4818B31D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Greater than 20 Years, Inclusive of Renewals at the Company's Option [Member]</link:label>
    <link:label id="lab_gsv_GreaterThan20YearsInclusiveOfRenewalsAtCompanysOptionMember_16D99828B51C45200FDCBCAA4818B31D_label_en-US" xlink:label="lab_gsv_GreaterThan20YearsInclusiveOfRenewalsAtCompanysOptionMember_16D99828B51C45200FDCBCAA4818B31D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Greater than 20 Years Inclusive of Renewals at the Company's Option [Member]</link:label>
    <link:label id="lab_gsv_GreaterThan20YearsInclusiveOfRenewalsAtCompanysOptionMember_16D99828B51C45200FDCBCAA4818B31D_documentation_en-US" xlink:label="lab_gsv_GreaterThan20YearsInclusiveOfRenewalsAtCompanysOptionMember_16D99828B51C45200FDCBCAA4818B31D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Greater than 20 Years, Inclusive of Renewals at the Company's Option</link:label>
    <link:loc xlink:href="gsv-20141231.xsd#gsv_GreaterThan20YearsInclusiveOfRenewalsAtCompanysOptionMember" xlink:label="loc_gsv_GreaterThan20YearsInclusiveOfRenewalsAtCompanysOptionMember_16D99828B51C45200FDCBCAA4818B31D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gsv_GreaterThan20YearsInclusiveOfRenewalsAtCompanysOptionMember_16D99828B51C45200FDCBCAA4818B31D" xlink:to="lab_gsv_GreaterThan20YearsInclusiveOfRenewalsAtCompanysOptionMember_16D99828B51C45200FDCBCAA4818B31D" xlink:type="arc" />
    <link:label id="lab_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_35F00399365CF0434B8CBCAA48185A0A_terseLabel_en-US" xlink:label="lab_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_35F00399365CF0434B8CBCAA48185A0A" 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_35F00399365CF0434B8CBCAA48185A0A_label_en-US" xlink:label="lab_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_35F00399365CF0434B8CBCAA48185A0A" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems" xlink:label="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_35F00399365CF0434B8CBCAA48185A0A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_35F00399365CF0434B8CBCAA48185A0A" xlink:to="lab_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_35F00399365CF0434B8CBCAA48185A0A" xlink:type="arc" />
    <link:label id="lab_gsv_WeightedAverageRemainingTermOfTenantLeasesAtTenantsOption_B12EB9AC25DF5344DBC3BCAA4818C674_terseLabel_en-US" xlink:label="lab_gsv_WeightedAverageRemainingTermOfTenantLeasesAtTenantsOption_B12EB9AC25DF5344DBC3BCAA4818C674" 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_B12EB9AC25DF5344DBC3BCAA4818C674_label_en-US" xlink:label="lab_gsv_WeightedAverageRemainingTermOfTenantLeasesAtTenantsOption_B12EB9AC25DF5344DBC3BCAA4818C674" 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_B12EB9AC25DF5344DBC3BCAA4818C674_documentation_en-US" xlink:label="lab_gsv_WeightedAverageRemainingTermOfTenantLeasesAtTenantsOption_B12EB9AC25DF5344DBC3BCAA4818C674" 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-20141231.xsd#gsv_WeightedAverageRemainingTermOfTenantLeasesAtTenantsOption" xlink:label="loc_gsv_WeightedAverageRemainingTermOfTenantLeasesAtTenantsOption_B12EB9AC25DF5344DBC3BCAA4818C674" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gsv_WeightedAverageRemainingTermOfTenantLeasesAtTenantsOption_B12EB9AC25DF5344DBC3BCAA4818C674" xlink:to="lab_gsv_WeightedAverageRemainingTermOfTenantLeasesAtTenantsOption_B12EB9AC25DF5344DBC3BCAA4818C674" xlink:type="arc" />
    <link:label id="lab_gsv_MaximumCurrentTerm_73AE7DFAFE3B68554702BCAA48181988_terseLabel_en-US" xlink:label="lab_gsv_MaximumCurrentTerm_73AE7DFAFE3B68554702BCAA48181988" 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_73AE7DFAFE3B68554702BCAA48181988_label_en-US" xlink:label="lab_gsv_MaximumCurrentTerm_73AE7DFAFE3B68554702BCAA48181988" 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_73AE7DFAFE3B68554702BCAA48181988_documentation_en-US" xlink:label="lab_gsv_MaximumCurrentTerm_73AE7DFAFE3B68554702BCAA48181988" 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-20141231.xsd#gsv_MaximumCurrentTerm" xlink:label="loc_gsv_MaximumCurrentTerm_73AE7DFAFE3B68554702BCAA48181988" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_gsv_MaximumCurrentTerm_73AE7DFAFE3B68554702BCAA48181988" xlink:to="lab_gsv_MaximumCurrentTerm_73AE7DFAFE3B68554702BCAA48181988" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent_BFD493C679A1285CFC8FBCAA481853D4_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent_BFD493C679A1285CFC8FBCAA481853D4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tenant Leases 2014</link:label>
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent_BFD493C679A1285CFC8FBCAA481853D4_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent_BFD493C679A1285CFC8FBCAA481853D4" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent_BFD493C679A1285CFC8FBCAA481853D4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent_BFD493C679A1285CFC8FBCAA481853D4" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent_BFD493C679A1285CFC8FBCAA481853D4" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears_22AE33740724A0043931BCAA4818D1EF_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears_22AE33740724A0043931BCAA4818D1EF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tenant Leases 2015</link:label>
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears_22AE33740724A0043931BCAA4818D1EF_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears_22AE33740724A0043931BCAA4818D1EF" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears_22AE33740724A0043931BCAA4818D1EF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears_22AE33740724A0043931BCAA4818D1EF" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears_22AE33740724A0043931BCAA4818D1EF" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears_6F0C5F9F5F13B7E41E29BCAA48181753_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears_6F0C5F9F5F13B7E41E29BCAA48181753" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tenant Leases 2016</link:label>
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears_6F0C5F9F5F13B7E41E29BCAA48181753_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears_6F0C5F9F5F13B7E41E29BCAA48181753" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears_6F0C5F9F5F13B7E41E29BCAA48181753" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears_6F0C5F9F5F13B7E41E29BCAA48181753" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears_6F0C5F9F5F13B7E41E29BCAA48181753" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears_2BA3B390AFAC3902DC33BCAA48182803_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears_2BA3B390AFAC3902DC33BCAA48182803" 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_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears_2BA3B390AFAC3902DC33BCAA48182803_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears_2BA3B390AFAC3902DC33BCAA48182803" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears_2BA3B390AFAC3902DC33BCAA48182803" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears_2BA3B390AFAC3902DC33BCAA48182803" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears_2BA3B390AFAC3902DC33BCAA48182803" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears_3C3A6FE13321C9BD5E10BCAA481889E8_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears_3C3A6FE13321C9BD5E10BCAA481889E8" 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_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears_3C3A6FE13321C9BD5E10BCAA481889E8_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears_3C3A6FE13321C9BD5E10BCAA481889E8" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears_3C3A6FE13321C9BD5E10BCAA481889E8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears_3C3A6FE13321C9BD5E10BCAA481889E8" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears_3C3A6FE13321C9BD5E10BCAA481889E8" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter_18FB9AEDB526B5A3C889BCAA48188446_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter_18FB9AEDB526B5A3C889BCAA48188446" 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_18FB9AEDB526B5A3C889BCAA48188446_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter_18FB9AEDB526B5A3C889BCAA48188446" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter_18FB9AEDB526B5A3C889BCAA48188446" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter_18FB9AEDB526B5A3C889BCAA48188446" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter_18FB9AEDB526B5A3C889BCAA48188446" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable_E6988C57975A9CA823FDBCAA481853A4_totalLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable_E6988C57975A9CA823FDBCAA481853A4" 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_E6988C57975A9CA823FDBCAA481853A4_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable_E6988C57975A9CA823FDBCAA481853A4" 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable_E6988C57975A9CA823FDBCAA481853A4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable_E6988C57975A9CA823FDBCAA481853A4" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable_E6988C57975A9CA823FDBCAA481853A4" xlink:type="arc" />
    <link:label id="lab_gsv_Percentageoftowersthatisonlandthathasnoncancelableoperatingleases_0415FE121D9B3BFE807FBCAA48185096_terseLabel_en-US" xlink:label="lab_gsv_Percentageoftowersthatisonlandthathasnoncancelableoperatingleases_0415FE121D9B3BFE807FBCAA48185096" 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_0415FE121D9B3BFE807FBCAA48185096_label_en-US" xlink:label="lab_gsv_Percentageoftowersthatisonlandthathasnoncancelableoperatingleases_0415FE121D9B3BFE807FBCAA48185096" 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_0415FE121D9B3BFE807FBCAA48185096_documentation_en-US" xlink:label="lab_gsv_Percentageoftowersthatisonlandthathasnoncancelableoperatingleases_0415FE121D9B3BFE807FBCAA48185096" 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-20141231.xsd#gsv_Percentageoftowersthatisonlandthathasnoncancelableoperatingleases" xlink:label="loc_gsv_Percentageoftowersthatisonlandthathasnoncancelableoperatingleases_0415FE121D9B3BFE807FBCAA48185096" xlink:type="locator" />
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    <link:label id="lab_gsv_PercentageOfSiteRentalGrossMarginThatIsDerivedFromTowersWhereLeaseForLandHasFinalExpirationDate_4EEEEB029D1EE4CC279EBCAA4818AC6D_terseLabel_en-US" xlink:label="lab_gsv_PercentageOfSiteRentalGrossMarginThatIsDerivedFromTowersWhereLeaseForLandHasFinalExpirationDate_4EEEEB029D1EE4CC279EBCAA4818AC6D" 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>
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    <link:label id="lab_us-gaap_IncomeStatementAbstract_B166DAB70DDD8DE5D072BCAA489CB0A1_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeStatementAbstract_B166DAB70DDD8DE5D072BCAA489CB0A1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income Statement [Abstract]</link:label>
    <link:label id="lab_us-gaap_IncomeStatementAbstract_B166DAB70DDD8DE5D072BCAA489CB0A1_label_en-US" xlink:label="lab_us-gaap_IncomeStatementAbstract_B166DAB70DDD8DE5D072BCAA489CB0A1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Statement [Abstract]</link:label>
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    <link:label id="lab_us-gaap_RevenuesAbstract_C8D7CCC9175661EC0F4CBCAA489CAB95_label_en-US" xlink:label="lab_us-gaap_RevenuesAbstract_C8D7CCC9175661EC0F4CBCAA489CAB95" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenues [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RevenuesAbstract" xlink:label="loc_us-gaap_RevenuesAbstract_C8D7CCC9175661EC0F4CBCAA489CAB95" xlink:type="locator" />
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    <link:label id="lab_us-gaap_OperatingLeasesIncomeStatementLeaseRevenue_FBAA355B69478C62E9A4BCAA489C6326_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesIncomeStatementLeaseRevenue_FBAA355B69478C62E9A4BCAA489C6326" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Site rental revenues</link:label>
    <link:label id="lab_us-gaap_OperatingLeasesIncomeStatementLeaseRevenue_FBAA355B69478C62E9A4BCAA489C6326_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesIncomeStatementLeaseRevenue_FBAA355B69478C62E9A4BCAA489C6326" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases, Income Statement, Lease Revenue</link:label>
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    <link:label id="lab_us-gaap_OperatingExpensesAbstract_944303D066CB3B97755BBCAA489C237A_label_en-US" xlink:label="lab_us-gaap_OperatingExpensesAbstract_944303D066CB3B97755BBCAA489C237A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Expenses [Abstract]</link:label>
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    <link:label id="lab_gsv_DirectCostsOfLeasedAndRentedPropertyOrEquipmentThirdParty_F782A55A07139558BAE0BCAA489C408C_terseLabel_en-US" xlink:label="lab_gsv_DirectCostsOfLeasedAndRentedPropertyOrEquipmentThirdParty_F782A55A07139558BAE0BCAA489C408C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Site rental cost of operations&#8212;third parties(a)</link:label>
    <link:label id="lab_gsv_DirectCostsOfLeasedAndRentedPropertyOrEquipmentThirdParty_F782A55A07139558BAE0BCAA489C408C_label_en-US" xlink:label="lab_gsv_DirectCostsOfLeasedAndRentedPropertyOrEquipmentThirdParty_F782A55A07139558BAE0BCAA489C408C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Direct Costs of Leased and Rented Property or Equipment, Third Party</link:label>
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    <link:label id="lab_gsv_DirectCostsOfLeasedAndRentedPropertyOrEquipmentRelatedParty_DB15034BA835630DAD49BCAA489C6E6C_terseLabel_en-US" xlink:label="lab_gsv_DirectCostsOfLeasedAndRentedPropertyOrEquipmentRelatedParty_DB15034BA835630DAD49BCAA489C6E6C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Site rental cost of operations&#8212;related parties(a)</link:label>
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    <link:label id="lab_gsv_ManagementFeeExpenseRelatedParty_EB3F3BCB1076E4BF9E2DBCAA489CF061_terseLabel_en-US" xlink:label="lab_gsv_ManagementFeeExpenseRelatedParty_EB3F3BCB1076E4BF9E2DBCAA489CF061" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Management fee</link:label>
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    <link:label id="lab_gsv_BasisOfPresentationAbstract_644833995A29C0A559B8BCAA4887B858_label_en-US" xlink:label="lab_gsv_BasisOfPresentationAbstract_644833995A29C0A559B8BCAA4887B858" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Basis of Presentation [Abstract]</link:label>
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    <link:label id="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_E6695A4D036451A5DA6ABCAA48876B90_terseLabel_en-US" xlink:label="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_E6695A4D036451A5DA6ABCAA48876B90" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Basis of Presentation</link:label>
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