Query: When was my last immunization and which vaccine was it for?, FHIR Resource: {'resourceType': 'Immunization', 'status': 'completed', 'vaccineCode': {'coding': [{'system': 'http://hl7.org/fhir/sid/cvx', 'code': '49', 'display': 'Hib (PRP-OMP)'}], 'text': 'Hib (PRP-OMP)'}, 'patient': {'reference': 'urn:uuid:4c05625d-d3a8-89d9-0d40-c4c6fa69cc99'}, 'occurrenceDateTime': '2014-08-30T16:13:28+05:30', 'primarySource': True}