An aircraft may stop.Logical formLearned from28 sentences. A producer can be constituted-of-or-filled-with (aircraft self-protection systems).Logical formLearned from28 sentences. Aircrafts can be registered.Logical formLearned from28 sentences. An aircraft may fire some missiles.Logical formLearned from28 sentences. An (aircraft industry) can be civilian.Logical formLearned from28 sentences. A redesign may pertain-to an aircraft.Logical formLearned from28 sentences. Persons can be an aircraft.Logical formLearned from28 sentences. Some encounters can be between aircraft.Logical formLearned from28 sentences. Unmanned aircraft may undergo a use.Logical formLearned from28 sentences. An aircraft can be a helicopter.Logical formLearned from28 sentences. A wreck may pertain-to an aircraft.Logical formLearned from27 sentences. A light aircraft may crash.Logical formLearned from27 sentences. Aircrafts may undergo a production.Logical formLearned from27 sentences. An aircraft can be basic.Logical formLearned from27 sentences. Aircrafts may be based.Logical formLearned from27 sentences.