Query: What were my vital signs during my last observation?, FHIR Resource: {'resourceType': 'DiagnosticReport', 'status': 'final', 'category': [{'coding': [{'system': 'http://loinc.org', 'code': '34117-2', 'display': 'History and physical note'}, {'system': 'http://loinc.org', 'code': '51847-2', 'display': 'Evaluation + Plan note'}]}], 'code': {'coding': [{'system': 'http://loinc.org', 'code': '34117-2', 'display': 'History and physical note'}, {'system': 'http://loinc.org', 'code': '51847-2', 'display': 'Evaluation + Plan note'}]}, 'subject': {'reference': 'urn:uuid:5bc9c553-2449-7cd9-fc11-70a1393cc5c6'}, 'effectiveDateTime': '2021-04-22T09:48:27+05:30', 'result': None}