Some f-16s may take_off from a military base.Logical formLearned from4 sentences. An aircraft may take_off from a base.Logical formLearned from4 sentences. A plane may be highjacked after take_offing at an airport.Logical formLearned from4 sentences. A helicopter may take_off from an airport.Logical formLearned from4 sentences. Some (missile carriers) may take_off from some airfields.Logical formLearned from4 sentences. Transporters may take_off from an airport.Logical formLearned from4 sentences. A first flight may take_off at some a.m..Logical formLearned from4 sentences. A boeing-737 may crash after take_offing from an airport.Logical formLearned from4 sentences. A (charter flight) may take_off from a world-city.Logical formLearned from4 sentences. A helicopter may take_off from airport.Logical formLearned from4 sentences. A president may take_off an (army uniform).Logical formLearned from4 sentences. A fighter may take_off on a sortie.Logical formLearned from4 sentences. B-52s may take_off from an airline.Logical formLearned from4 sentences. A plane may take_off from an academy.Logical formLearned from4 sentences. An interceptor may take_off some miles.Logical formLearned from4 sentences.