An aircraft may undergo a motion.Logical formLearned from52 sentences. Access can be to an aircraft.Logical formLearned from52 sentences. An aircraft may pertain-to a world-city.Logical formLearned from52 sentences. A threat can be to an aircraft.Logical formLearned from52 sentences. Systems may pertain-to an aircraft.Logical formLearned from51 sentences. Aircrafts can be modified.Logical formLearned from51 sentences. An aircraft may be lost.Logical formLearned from51 sentences. An aircraft may be seen.Logical formLearned from51 sentences. An (unmanned aircraft) may pertain-to a country.Logical formLearned from51 sentences. An aircraft can be in a (market segment).Logical formLearned from51 sentences. A series can be constituted-of-or-filled-with (wide-body aircraft).Logical formLearned from51 sentences. Aircrafts may meet needs.Logical formLearned from51 sentences. An aircraft can be with (fuel consumption).Logical formLearned from51 sentences. A person may see an aircraft.Logical formLearned from51 sentences. An aircraft may go into maintenance.Logical formLearned from51 sentences.