Query: What was my BMI in February 2019?, FHIR Resource: {'resourceType': 'DiagnosticReport', 'status': 'final', 'category': [{'coding': [{'system': 'http://terminology.hl7.org/CodeSystem/v2-0074', 'code': 'LAB', 'display': 'Laboratory'}]}], 'code': {'coding': [{'system': 'http://loinc.org', 'code': '51990-0', 'display': 'Basic metabolic panel - Blood'}], 'text': 'Basic metabolic panel - Blood'}, 'subject': {'reference': 'urn:uuid:54d00ea5-8424-ad80-c280-a1d881891ca3'}, 'effectiveDateTime': '2019-02-15T12:43:50+05:30', 'result': [{'reference': 'urn:uuid:70faecd3-a9e3-3b3b-3bb0-e7b07f6f7c9c', 'display': 'Glucose [Mass/volume] in Blood'}, {'reference': 'urn:uuid:41d54030-a3d3-e7b5-976d-f9452ece0b89', 'display': 'Urea nitrogen [Mass/volume] in Blood'}, {'reference': 'urn:uuid:09ad4f14-c5f7-ac6b-0c14-be01034af539', 'display': 'Creatinine [Mass/volume] in Blood'}, {'reference': 'urn:uuid:d664a471-dfa3-26bb-fb64-0b587a19f934', 'display': 'Calcium [Mass/volume] in Blood'}, {'reference': 'urn:uuid:83b2ba56-2140-a4ac-9ca9-17dd4752de81', 'display': 'Sodium [Moles/volume] in Blood'}, {'reference': 'urn:uuid:4ab842c7-8ce4-9f32-0080-a23bf91e418f', 'display': 'Potassium [Moles/volume] in Blood'}, {'reference': 'urn:uuid:033da9d7-2939-14af-1c0f-136dcd46dc58', 'display': 'Chloride [Moles/volume] in Blood'}, {'reference': 'urn:uuid:528f24ee-a465-87bd-695c-1026ebd4acc3', 'display': 'Carbon dioxide, total [Moles/volume] in Blood'}]}