Query: What was my last medical check-up for?, 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': '72514-3', 'display': 'Pain severity - 0-10 verbal numeric rating [Score] - Reported'}], 'text': 'Pain severity - 0-10 verbal numeric rating [Score] - Reported'}, 'subject': {'reference': 'urn:uuid:f8ab9da3-c15b-2f9d-7e8a-a8f255274ecb'}, 'effectiveDateTime': '2022-03-28T18:18:35+05:30', 'valueQuantity': {'value': 2, 'unit': '{score}', 'system': 'http://unitsofmeasure.org', 'code': '{score}'}, 'interpretation': None}