Airlines may operate flights.Logical formLearned from58 sentences. Flights can be to a country.Logical formLearned from58 sentences. A male may book a flight.Logical formLearned from58 sentences. A flight can be outgoing.Logical formLearned from58 sentences. Part may pertain-to a flight.Logical formLearned from58 sentences. Phases can be constituted-of-or-filled-with flight.Logical formLearned from58 sentences. Flights can be by planes.Logical formLearned from58 sentences. Flights can be by carriers.Logical formLearned from58 sentences. Direct flights may undergo a launch.Logical formLearned from58 sentences. An expansion may lead to cheap flights.Logical formLearned from58 sentences. Flights can be at some airports.Logical formLearned from58 sentences. (Shuttle flights) may undergo a resumption.Logical formLearned from58 sentences. A flight may take_off from a world-city.Logical formLearned from58 sentences. (Surveillance flights) may pertain-to an international-political-entity.Logical formLearned from58 sentences. (Military flights) may pertain-to an international-political-entity.Logical formLearned from58 sentences.