Query: What was my heart rate reading in my last checkup?, FHIR Resource: {'resourceType': 'Observation', 'status': 'final', 'category': [{'coding': [{'system': 'http://terminology.hl7.org/CodeSystem/observation-category', 'code': 'vital-signs', 'display': 'Vital signs'}]}], 'code': {'coding': [{'system': 'http://loinc.org', 'code': '85354-9', 'display': 'Blood pressure panel with all children optional'}], 'text': 'Blood pressure panel with all children optional'}, 'subject': {'reference': 'urn:uuid:aee1221c-0e31-c34b-cba4-76fa6a75da5a'}, 'effectiveDateTime': '2017-10-04T16:33:45+05:30', 'valueQuantity': None, 'interpretation': None}