Persons may crash at a place.Logical formLearned from51 sentences. Terrorists may crash planes.Logical formLearned from51 sentences. A plane may crash into a building.Logical formLearned from50 sentences. A learjet may crash on takeoff.Logical formLearned from50 sentences. A helicopter may crash into a sea.Logical formLearned from50 sentences. A plane may crash into a field.Logical formLearned from50 sentences. A bomber may crash.Logical formLearned from49 sentences. A male may crash at a place.Logical formLearned from49 sentences. An (air force helicopter) may crash.Logical formLearned from49 sentences. Thunder may crash.Logical formLearned from49 sentences. A plane may crash into an ocean.Logical formLearned from49 sentences. Servers may crash.Logical formLearned from48 sentences. A phone may crash.Logical formLearned from48 sentences. Waves may crash over a seawall.Logical formLearned from48 sentences. A population may crash.Logical formLearned from48 sentences.