Find all of the weak entities and indicate which entity it depends on.

Airport code City State) Name DEPARTURE AIRPORT Leg no AIRPORT Scheduled dep time Scheduled arr time FLIGHT LEG ARRIVAL N CAN AIRPORT Instances LEGS LAND Number INSTANCE OF Type name Max seats Airline FLIGHT Company AIRPLANE Arr time Weekdays TYPE DEPARTS Restrictions FARES Dep time N ARRIVES Amount TYPE Code FARE Airplane id No of avail seats Total no of seats Date LEG INSTANCE AIRPLANE ASSIGNED Customer name Cphone Seat no RESERVATION Notes A LEG (segment) is a nonstop portion of a flight SEAT A LEG INSTANCE is a particular occurrence of a LEG on a particular date