Query: When was my last tetanus shot?, 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': '2339-0', 'display': 'Glucose [Mass/volume] in Blood'}], 'text': 'Glucose [Mass/volume] in Blood'}, 'subject': {'reference': 'urn:uuid:724508c5-a802-d19d-5ccb-4ddf34469b47'}, 'effectiveDateTime': '2022-11-25T19:52:08+05:30', 'valueQuantity': {'value': 65.33, 'unit': 'mg/dL', 'system': 'http://unitsofmeasure.org', 'code': 'mg/dL'}, 'interpretation': None}