Some aircrafts may be produced.Logical formLearned from46 sentences. A contract can be for some aircraft.Logical formLearned from46 sentences. An owner may pertain-to an aircraft.Logical formLearned from46 sentences. A family can be constituted-of-or-filled-with aircraft.Logical formLearned from46 sentences. A (combat aircraft) can be unmanned.Logical formLearned from46 sentences. A flight can be by an unmanned aircraft.Logical formLearned from46 sentences. An (aircraft carrier group) may pertain-to a country.Logical formLearned from46 sentences. A threat can be to aircraft.Logical formLearned from46 sentences. Aircraft may land.Logical formLearned from46 sentences. Safety may pertain-to an aircraft.Logical formLearned from46 sentences. An aircraft can be registered.Logical formLearned from46 sentences. Persons may have an aircraft.Logical formLearned from46 sentences. A threat can be to (coalition aircraft).Logical formLearned from46 sentences. An (attack aircraft) may pertain-to a country.Logical formLearned from45 sentences. An aircraft may make a landing.Logical formLearned from45 sentences.