A reason can be behind a crash.Logical formLearned from11 sentences. A crash may occur in hours.Logical formLearned from11 sentences. Site may pertain-to a crash.Logical formLearned from11 sentences. A chopper may undergo a crash.Logical formLearned from11 sentences. A month may boe crashes.Logical formLearned from11 sentences. (Passenger planes) may undergo crashes.Logical formLearned from11 sentences. A (death toll) can be in a (plane crash).Logical formLearned from11 sentences. Crashes can be a problem.Logical formLearned from11 sentences. A crash may spark a fire.Logical formLearned from11 sentences. A helicopter may undergo a (crash site).Logical formLearned from11 sentences. Some crewmen may survive a crash.Logical formLearned from11 sentences. A crash may undergo a (death toll).Logical formLearned from11 sentences. A crash can be high.Logical formLearned from11 sentences. Some bodies may be recovered from a (crash site).Logical formLearned from11 sentences. An airship may undergo a crash.Logical formLearned from11 sentences.