Query: When was my last ultrasound and what was it for?, FHIR Resource: {'resourceType': 'Encounter', 'status': 'finished', 'class': {'system': 'http://terminology.hl7.org/CodeSystem/v3-ActCode', 'code': 'AMB'}, 'type': [{'coding': [{'system': 'http://snomed.info/sct', 'code': '185347001', 'display': 'Encounter for problem (procedure)'}], 'text': 'Encounter for problem (procedure)'}], 'subject': {'reference': 'urn:uuid:2e167b80-1b1b-a84b-feb7-2449200180e1', 'display': "Mr. Andres25 Shawn523 O'Hara248"}, 'participant': [{'type': [{'coding': [{'system': 'http://terminology.hl7.org/CodeSystem/v3-ParticipationType', 'code': 'PPRF', 'display': 'primary performer'}], 'text': 'primary performer'}], 'period': {'start': '2020-10-10T01:55:16+05:30', 'end': '2020-10-10T02:34:36+05:30'}, 'individual': {'reference': 'Practitioner?identifier=http://hl7.org/fhir/sid/us-npi|9999984591', 'display': 'Dr. Ted955 Reilly981'}}], 'period': {'start': '2020-10-10T01:55:16+05:30', 'end': '2020-10-10T02:34:36+05:30'}}