Query: When was my last prenatal visit?, FHIR Resource: {'resourceType': 'Procedure', 'status': 'completed', 'category': None, 'code': {'coding': [{'system': 'http://snomed.info/sct', 'code': '167271000', 'display': 'Urine protein test'}], 'text': 'Urine protein test'}, 'subject': {'reference': 'urn:uuid:eeb33329-be74-1ef0-7137-9ba0050bf2ef'}, 'performedDateTime': None}