could you please tell me the first flight leaving baltimore to san francisco on a 747 on august twenty seventh
O O O O O O B-flight_mod O O B-fromloc.city_name O B-toloc.city_name I-toloc.city_name O O B-aircraft_code O B-depart_date.month_name B-depart_date.day_number I-depart_date.day_number