A flight can be over a country.Logical formLearned from56 sentences. A flight can be homeward.Logical formLearned from56 sentences. Flights can be experimental.Logical formLearned from56 sentences. A person may fall_down a flight of stairs.Logical formLearned from56 sentences. Some (hour flight) can be from a world-city.Logical formLearned from56 sentences. A male may fall_down a flight of stairs.Logical formLearned from56 sentences. Flights can be uneventful.Logical formLearned from56 sentences. A member may pertain-to a (flight crew).Logical formLearned from56 sentences. A flight may be diverted.Logical formLearned from56 sentences. A (return flight) may leave a world-city.Logical formLearned from56 sentences. A departure may pertain-to a flight.Logical formLearned from56 sentences. Flights can be by aircraft.Logical formLearned from56 sentences. A service can be a flight.Logical formLearned from55 sentences. Commercial flights can be international.Logical formLearned from55 sentences. A direction may pertain-to a flight.Logical formLearned from55 sentences.