Query: What was my latest Hemoglobin A1c level?, FHIR Resource: {'resourceType': 'Observation', 'status': 'final', 'category': [{'coding': [{'system': 'http://terminology.hl7.org/CodeSystem/observation-category', 'code': 'laboratory', 'display': 'Laboratory'}]}], 'code': {'coding': [{'system': 'http://loinc.org', 'code': '4548-4', 'display': 'Hemoglobin A1c/Hemoglobin.total in Blood'}], 'text': 'Hemoglobin A1c/Hemoglobin.total in Blood'}, 'subject': {'reference': 'urn:uuid:152488e2-85f6-45f7-dbfe-b1b77742b4f7'}, 'effectiveDateTime': '2021-10-07T06:13:35+05:30', 'valueQuantity': {'value': 6.02, 'unit': '%', 'system': 'http://unitsofmeasure.org', 'code': '%'}, 'interpretation': None}