John is leaving work at 12 , what time should he arrive here ?
B-SL_SOURCE_IN_GET_LOCATION_WORK_SL_CONTACT I-SL_SOURCE_IN_GET_LOCATION_WORK I-SL_SOURCE_IN_GET_LOCATION_WORK I-SL_SOURCE_IN_GET_LOCATION_WORK B-SL_DATE_TIME_DEPARTURE I-SL_DATE_TIME_DEPARTURE O O O O O O B-SL_DESTINATION_IN_GET_LOCATION_SL_LOCATION_USER O