A plane may crash before landing.Logical formLearned from11 sentences. A helicopter may crash after takeoff.Logical formLearned from11 sentences. An a310 may crash into an ocean.Logical formLearned from10 sentences. A (passenger bus) may crash into a truck.Logical formLearned from10 sentences. A (commuter jet) may crash in a US-city.Logical formLearned from10 sentences. A jet may crash in a world-city.Logical formLearned from10 sentences. A van may crash into a truck.Logical formLearned from10 sentences. (Sea waves) may crash into villages.Logical formLearned from10 sentences. A (military transport plane) may crash on takeoff.Logical formLearned from10 sentences. A (training aircraft) may crash.Logical formLearned from10 sentences. A plane may crash into an (apartment building).Logical formLearned from10 sentences. An aircraft may crash after take-off.Logical formLearned from10 sentences. A prototype may crash on a month.Logical formLearned from10 sentences. A box may crash.Logical formLearned from10 sentences. A plane may crash at sea.Logical formLearned from10 sentences.