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<!--Created on: 11/3/2014 3:22:46 PM-->
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  <element id="snh_NumberOfPropertiesAcquired" name="NumberOfPropertiesAcquired" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="NumberOfPropertiesAcquiredManagedProperties" id="snh_NumberOfPropertiesAcquiredManagedProperties" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="EquityMethodInvestmentPropertyInsuranceAnnualPremiumAmount" id="snh_EquityMethodInvestmentPropertyInsuranceAnnualPremiumAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <element id="snh_RealEstateAggregatePurchasePrice" name="RealEstateAggregatePurchasePrice" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="RelatedPartyTransactionExpensesFromBusinessManagementAgreementTransactionsWithRelatedParty" id="snh_RelatedPartyTransactionExpensesFromBusinessManagementAgreementTransactionsWithRelatedParty" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="RelatedPartyTransactionExpensesFromPropertyManagementAgreementTransactionsWithRelatedParty" id="snh_RelatedPartyTransactionExpensesFromPropertyManagementAgreementTransactionsWithRelatedParty" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="SeniorUnsecuredNotes4.30PercentMember" id="snh_SeniorUnsecuredNotes4.30PercentMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SeniorUnsecuredNotes6.75PercentDue2021Member" id="snh_SeniorUnsecuredNotes6.75PercentDue2021Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SeniorUnsecuredNotes5.625PercentDue2042Member" id="snh_SeniorUnsecuredNotes5.625PercentDue2042Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SeniorUnsecuredNotes6.75PercentMember" id="snh_SeniorUnsecuredNotes6.75PercentMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfBusinessDaysBeforeWhichNoticeRequiredForTerminationOfPropertyManagementAgreementUponChangeInControl" id="snh_NumberOfBusinessDaysBeforeWhichNoticeRequiredForTerminationOfPropertyManagementAgreementUponChangeInControl" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InvestmentOwnershipPercentage" id="snh_InvestmentOwnershipPercentage" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="NumberOfRealEstatePropertiesImpaired" id="snh_NumberOfRealEstatePropertiesImpaired" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RelatedPartyTransactionNumberOfOtherShareholders" id="snh_RelatedPartyTransactionNumberOfOtherShareholders" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="EquityMethodInvestmentOwnershipPercentageHeld" id="snh_EquityMethodInvestmentOwnershipPercentageHeld" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="InvestmentBuildingImprovementsCIPAndInvestments" id="snh_InvestmentBuildingImprovementsCIPAndInvestments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="OperatingLeasesOfLessorLesseeDomain" id="snh_OperatingLeasesOfLessorLesseeDomain" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="IncreaseDecreaseOperatingLeasesAnnualRent" id="snh_IncreaseDecreaseOperatingLeasesAnnualRent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="RealEstateImprovementsByLesseePurchased" id="snh_RealEstateImprovementsByLesseePurchased" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="RentsReceivable" id="snh_RentsReceivable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="RealEstatePropertiesAcquiredIntangibleLeaseAssets" id="snh_RealEstatePropertiesAcquiredIntangibleLeaseAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="RealEstatePropertiesAcquiredIntangibleLeaseLiabilities" id="snh_RealEstatePropertiesAcquiredIntangibleLeaseLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="NoncashOrPartNoncashAcquisitionPremiumOnDebtAssumed1" id="snh_NoncashOrPartNoncashAcquisitionPremiumOnDebtAssumed1" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="RealEstatePropertiesAcquiredPropertyPlantAndEquipment" id="snh_RealEstatePropertiesAcquiredPropertyPlantAndEquipment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="SeniorNotesFairValueInExcessOfBookValue" id="snh_SeniorNotesFairValueInExcessOfBookValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="NumberOfRealEstatePropertiesCollateralized" id="snh_NumberOfRealEstatePropertiesCollateralized" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="NumberOfRealEstatePropertiesCollateralizedUnderMortgageLoansRepaid" id="snh_NumberOfRealEstatePropertiesCollateralizedUnderMortgageLoansRepaid" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="CumulativeImpairmentOfLongLivedAssetsToBeDisposed" id="snh_CumulativeImpairmentOfLongLivedAssetsToBeDisposed" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="ResidentsFeesAndServicesRevenue" id="snh_ResidentsFeesAndServicesRevenue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrumentExtensionTermOfMaturityTerm" id="snh_DebtInstrumentExtensionTermOfMaturityTerm" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InvestmentOwnedPercentageOfTotalSharesOutstanding" id="snh_InvestmentOwnedPercentageOfTotalSharesOutstanding" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="NumberOfManagingTrusteesAlsoServingAsManagingTrusteeOfRelatedParty" id="snh_NumberOfManagingTrusteesAlsoServingAsManagingTrusteeOfRelatedParty" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="ProFormaInformationDisclosureAbstract" id="snh_ProFormaInformationDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ProFormaInformationDisclosureTextBlock" id="snh_ProFormaInformationDisclosureTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RealEstateInvestmentPropertyAtCostMember" id="snh_RealEstateInvestmentPropertyAtCostMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RealEstateRevenueNetMember" id="snh_RealEstateRevenueNetMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SignificantAcquisitionsAndDisposalsProFormaRevenue" id="snh_SignificantAcquisitionsAndDisposalsProFormaRevenue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="SignificantAcquisitionsAndDisposalsProFormaInformationAbstract" id="snh_SignificantAcquisitionsAndDisposalsProFormaInformationAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SignificantAcquisitionsAndDisposalsProFormaEarningsPerShareBasic" id="snh_SignificantAcquisitionsAndDisposalsProFormaEarningsPerShareBasic" type="num:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SignificantAcquisitionsAndDisposalsNetIncomeLoss" id="snh_SignificantAcquisitionsAndDisposalsNetIncomeLoss" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="NumberOfServiceAgreements" id="snh_NumberOfServiceAgreements" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="PeriodBeforeWhichWrittenNoticeRequiredForTerminationOfServiceAgreements" id="snh_PeriodBeforeWhichWrittenNoticeRequiredForTerminationOfServiceAgreements" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RelatedPartyEmployeesNumber" id="snh_RelatedPartyEmployeesNumber" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="EquityMethodInvestmentPropertyInsuranceCoverageAmount" id="snh_EquityMethodInvestmentPropertyInsuranceCoverageAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="LineOfCreditFacilityOptionToIncreaseMaximumBorrowingCapacity" id="snh_LineOfCreditFacilityOptionToIncreaseMaximumBorrowingCapacity" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="NumberOfMortgageLoansRepaid" id="snh_NumberOfMortgageLoansRepaid" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OtherComprehensiveIncomeLossAttributableToEquityMethodInvesteeNetOfTax" id="snh_OtherComprehensiveIncomeLossAttributableToEquityMethodInvesteeNetOfTax" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="SaleOfAssetsMember" id="snh_SaleOfAssetsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfPoolingAgreements" id="snh_NumberOfPoolingAgreements" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="FairValueMeasurementsRecurringAndNonrecurringMember" id="snh_FairValueMeasurementsRecurringAndNonrecurringMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RealEstateAgreementsByTypeAxis" id="snh_RealEstateAgreementsByTypeAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RealEstateAgreementsByTypeDomain" id="snh_RealEstateAgreementsByTypeDomain" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="TripleNetSeniorLivingCommunitiesMember" id="snh_TripleNetSeniorLivingCommunitiesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ManagedSeniorLivingCommunitiesMember" id="snh_ManagedSeniorLivingCommunitiesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrumentPrincipalRepaymentDueUntilMaturity" id="snh_DebtInstrumentPrincipalRepaymentDueUntilMaturity" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="AreaOfRealEstatePropertyHeldForSale" id="snh_AreaOfRealEstatePropertyHeldForSale" type="num:areaItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="SecondALPoolingAgreementsMember" id="snh_SecondALPoolingAgreementsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AssetImpairmentChargesCashFlowEffect" id="snh_AssetImpairmentChargesCashFlowEffect" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="NumberOfPropertiesPreviouslyAgreedToBeSold" id="snh_NumberOfPropertiesPreviouslyAgreedToBeSold" type="xbrli:integerItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="IncreaseDecreaseOperatingLeasesAnnualRentAsPercentageOfNetProceeds" id="snh_IncreaseDecreaseOperatingLeasesAnnualRentAsPercentageOfNetProceeds" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CombinedDirectorsAndOfficersLiabilityInsurancePolicyPurchasedByRelatedPartyAggregateCoverage" id="snh_CombinedDirectorsAndOfficersLiabilityInsurancePolicyPurchasedByRelatedPartyAggregateCoverage" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="CombinedAndSeparateDirectorsAndOfficersLiabilityInsurancePolicyPremiumPaid" id="snh_CombinedAndSeparateDirectorsAndOfficersLiabilityInsurancePolicyPremiumPaid" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="NumberOfBuildingsHeldForSale" id="snh_NumberOfBuildingsHeldForSale" type="xbrli:integerItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="NumberOfBuildingsSold" id="snh_NumberOfBuildingsSold" type="xbrli:integerItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfBuildingsAcquired" id="snh_NumberOfBuildingsAcquired" type="xbrli:integerItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfBuildings" id="snh_NumberOfBuildings" type="xbrli:integerItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="NumberOfPropertiesAgreedToBeAcquired" id="snh_NumberOfPropertiesAgreedToBeAcquired" type="xbrli:integerItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SignificantTenantTextBlock" id="snh_SignificantTenantTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfBuildingsCollateralized" id="snh_NumberOfBuildingsCollateralized" type="xbrli:integerItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="SeniorUnsecuredNotesDue2019Member" id="snh_SeniorUnsecuredNotesDue2019Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SeniorUnsecuredNotesDue2024Member" id="snh_SeniorUnsecuredNotesDue2024Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DeferredEstimatedPercentageRent" id="snh_DeferredEstimatedPercentageRent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrumentMaximumBorrowingCapacityOptionToIncrease" id="snh_DebtInstrumentMaximumBorrowingCapacityOptionToIncrease" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="NumberOfTaxableREITSubsidiariesToWhomPropertyIsLeased" id="snh_NumberOfTaxableREITSubsidiariesToWhomPropertyIsLeased" type="xbrli:integerItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="PeriodForProvidingTransitionServicesUnderServiceAgreements" id="snh_PeriodForProvidingTransitionServicesUnderServiceAgreements" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PropertyInsuranceProgramTerm" id="snh_PropertyInsuranceProgramTerm" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SeniorUnsecuredNotes3.25PercentMember" id="snh_SeniorUnsecuredNotes3.25PercentMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SeniorUnsecuredNotes4.75PercentMember" id="snh_SeniorUnsecuredNotes4.75PercentMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DisposalGroupIncludingDiscontinuedOperationDirectCostsOfLeasedAndRentedPropertyOrEquipment" id="snh_DisposalGroupIncludingDiscontinuedOperationDirectCostsOfLeasedAndRentedPropertyOrEquipment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="DebtWeightedAverageInterestRateDuringThePeriod" id="snh_DebtWeightedAverageInterestRateDuringThePeriod" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="snh_NumberOfStatesInWhichProertyIsLocated" name="NumberOfStatesInWhichProertyIsLocated" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="snh_SelectIncomeReitMember" name="SelectIncomeReitMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="snh_HealthcarePropertiesMember" name="HealthcarePropertiesMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="snh_RealEstateDebtDisposedOfInSaleOfPropertyTransactions" name="RealEstateDebtDisposedOfInSaleOfPropertyTransactions" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="snh_PeriodForWhichCompanyHasAgreedNotToMakeUnsolicitedProposalsToAcquire" name="PeriodForWhichCompanyHasAgreedNotToMakeUnsolicitedProposalsToAcquire" nillable="true" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="snh_LiabilityInsurancePolicyTerm" name="LiabilityInsurancePolicyTerm" nillable="true" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="snh_CombinedDirectorsAndOfficersLiabilityInsurancePolicyPurchasedByRelatedPartyAdditionalAggregateCoverage" name="CombinedDirectorsAndOfficersLiabilityInsurancePolicyPurchasedByRelatedPartyAdditionalAggregateCoverage" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="snh_AdditionalLiabilityInsurancePolicyTerm" name="AdditionalLiabilityInsurancePolicyTerm" nillable="true" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="snh_CombinedDirectorsAndOfficersLiabilityInsurancePolicyPurchasedByRelatedPartyNonIndemnifiableCoverage" name="CombinedDirectorsAndOfficersLiabilityInsurancePolicyPurchasedByRelatedPartyNonIndemnifiableCoverage" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="snh_CombinedDirectorsAndOfficersLiabilityInsurancePolicyPremiumPayable" name="CombinedDirectorsAndOfficersLiabilityInsurancePolicyPremiumPayable" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="snh_CommonSharesCollectivelyBeneficiallyOwned" name="CommonSharesCollectivelyBeneficiallyOwned" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="snh_RealEstateAggregatePurchasePriceIncludingOtherSettlementAdjustments" name="RealEstateAggregatePurchasePriceIncludingOtherSettlementAdjustments" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
</xsd:schema>
