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<!-- Round: 3 -->
<!-- Creation date: 2017-08-03T18:40:46Z -->
<!-- Copyright (c) 2017 Donnelley Financial, LLC. All Rights Reserved. -->
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  <element name="EnvironmentalIncidentNineteenNinetyFourMember" id="cptp_EnvironmentalIncidentNineteenNinetyFourMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="EstimatedCostRelatedToDesignInstallAndOperateSystem" id="cptp_EstimatedCostRelatedToDesignInstallAndOperateSystem" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="EstimatedRealPropertyTaxesAttributableToCompanyLand" id="cptp_EstimatedRealPropertyTaxesAttributableToCompanyLand" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ExpenseIncurredRelatedToDesignInstallAndOperateSystem" id="cptp_ExpenseIncurredRelatedToDesignInstallAndOperateSystem" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="FutureNoticePeriodForTerminationOfLease" id="cptp_FutureNoticePeriodForTerminationOfLease" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncomeTaxContinuingOperationsTextBlock" id="cptp_IncomeTaxContinuingOperationsTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncomeTaxesPaidDiscontinuedOperations" id="cptp_IncomeTaxesPaidDiscontinuedOperations" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncreaseInAnnualBasicRent" id="cptp_IncreaseInAnnualBasicRent" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LamarLeaseMember" id="cptp_LamarLeaseMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LeaseAgreementTerminationDate" id="cptp_LeaseAgreementTerminationDate" type="xbrli:dateItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LeaseExpirationYear" id="cptp_LeaseExpirationYear" type="xbrli:gYearItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NonCancellableLeasePeriod" id="cptp_NonCancellableLeasePeriod" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NoticePeriodForTerminationOfLongTermLease" id="cptp_NoticePeriodForTerminationOfLongTermLease" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfAdvertisingLocationLeased" id="cptp_NumberOfAdvertisingLocationLeased" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfLongTermLandLeases" id="cptp_NumberOfLongTermLandLeases" type="xbrli:integerItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfParcelsUponWhichConstructionHasCommenced" id="cptp_NumberOfParcelsUponWhichConstructionHasCommenced" type="xbrli:integerItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfParcelsUponWhichImprovementsHaveBeenComplete" id="cptp_NumberOfParcelsUponWhichImprovementsHaveBeenComplete" type="xbrli:integerItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfResidentialUnitsCommencedConstruction" id="cptp_NumberOfResidentialUnitsCommencedConstruction" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfTenantsOccupyingFiftyFourPercentOfBuilding" id="cptp_NumberOfTenantsOccupyingFiftyFourPercentOfBuilding" type="xbrli:integerItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ParcelSixBAndSixCMember" id="cptp_ParcelSixBAndSixCMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ParcelSixBMember" id="cptp_ParcelSixBMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ParcelSixCMember" id="cptp_ParcelSixCMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PartialRedemptionOfDividendNotesPayable" id="cptp_PartialRedemptionOfDividendNotesPayable" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PaymentsToAcquirePropertyPlantAndEquipmentDiscontinuedOperations" id="cptp_PaymentsToAcquirePropertyPlantAndEquipmentDiscontinuedOperations" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageOfAnnualIncrementInBaseRentOfLease" id="cptp_PercentageOfAnnualIncrementInBaseRentOfLease" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageOfBuildingOccupiedByThreeTenants" id="cptp_PercentageOfBuildingOccupiedByThreeTenants" type="num:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageOfRevenueReceivableDueInProportionOfGrossRevenueOfElectronicBillboard" id="cptp_PercentageOfRevenueReceivableDueInProportionOfGrossRevenueOfElectronicBillboard" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageOfRevenueReceivableDueInProportionOfGrossRevenueOfStandardBillboard" id="cptp_PercentageOfRevenueReceivableDueInProportionOfGrossRevenueOfStandardBillboard" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PeriodForAdvanceReceiptOfPercentageOfGrossRevenueOnLeases" id="cptp_PeriodForAdvanceReceiptOfPercentageOfGrossRevenueOnLeases" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PeriodToRecognizeSpecifiedLeaseRevenue" id="cptp_PeriodToRecognizeSpecifiedLeaseRevenue" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PetroleumSegmentMember" id="cptp_PetroleumSegmentMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PetroleumStorageFacilityAndEnvironmentalIncidentsAbstract" id="cptp_PetroleumStorageFacilityAndEnvironmentalIncidentsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PetroleumStorageFacilityAndEnvironmentalIncidentsTextBlock" id="cptp_PetroleumStorageFacilityAndEnvironmentalIncidentsTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PetroleumStorageServicesAgreementMember" id="cptp_PetroleumStorageServicesAgreementMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PropertiesOnLeaseOrHeldForLeaseMember" id="cptp_PropertiesOnLeaseOrHeldForLeaseMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RealPropertyTaxesEligibleForReimbursementInExcessOfMinimumEstablishedAmount" id="cptp_RealPropertyTaxesEligibleForReimbursementInExcessOfMinimumEstablishedAmount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RealPropertyTaxesReimbursementEligibilityCommencementDate" id="cptp_RealPropertyTaxesReimbursementEligibilityCommencementDate" type="xbrli:dateItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RedemptionOfDividendNotesPayable" id="cptp_RedemptionOfDividendNotesPayable" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SaleOfPetroleumSegmentMember" id="cptp_SaleOfPetroleumSegmentMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsDisposalActivityTableTextBlock" id="cptp_ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsDisposalActivityTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShortTermLeaseRentReceivableOverContractualRent" id="cptp_ShortTermLeaseRentReceivableOverContractualRent" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SpragueOperatingResourcesLlcMember" id="cptp_SpragueOperatingResourcesLlcMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SteepleStreetBuildingMember" id="cptp_SteepleStreetBuildingMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TaxEffectFromGainLossOnSaleOfDiscontinuedOperationsAbstract" id="cptp_TaxEffectFromGainLossOnSaleOfDiscontinuedOperationsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TermOfShortTermLease" id="cptp_TermOfShortTermLease" type="us-types:durationStringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="UseOfEstimatesTextBlock" id="cptp_UseOfEstimatesTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="VolumeOfStorageTankAtTerminal" id="cptp_VolumeOfStorageTankAtTerminal" type="num:volumeItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
</schema>
