A train may crash.Logical formLearned from45 sentences. The world may crash.Logical formLearned from45 sentences. A plane may crash into a home.Logical formLearned from45 sentences. Some airliners may crash.Logical formLearned from45 sentences. A b-25 may crash into a floor of a building.Logical formLearned from45 sentences. An (air force plane) may crash.Logical formLearned from45 sentences. Programs may crash.Logical formLearned from44 sentences. A female may crash a party.Logical formLearned from44 sentences. Hijackers may crash planes.Logical formLearned from44 sentences. A plane may crash in a world-city.Logical formLearned from44 sentences. Helicopters may crash.Logical formLearned from44 sentences. A plane may crash into an ocean.Logical formLearned from43 sentences. A real-estate market may crash.Logical formLearned from43 sentences. A (charter bus) may crash.Logical formLearned from43 sentences. A person may crash a bike.Logical formLearned from43 sentences.