An incident may follow some (helicopter crash).Logical formLearned from11 sentences. A crash can be a blow.Logical formLearned from11 sentences. An alert can be before a crash.Logical formLearned from11 sentences. A crash can be between some cars.Logical formLearned from11 sentences. A cause of a crash can be known.Logical formLearned from11 sentences. An (air crash) may kill some persons.Logical formLearned from11 sentences. A crash can be in a qualifying.Logical formLearned from11 sentences. An eyewitness can be to a crash.Logical formLearned from11 sentences. Inquiry can be into a crash.Logical formLearned from11 sentences. A (crash helmet) may pertain-to a male.Logical formLearned from11 sentences. A civilian aircraft may undergo a crash.Logical formLearned from10 sentences. Victims can be in a (plane crash).Logical formLearned from10 sentences. A month may two-engine (turboprop aircraft crashes).Logical formLearned from10 sentences. A predecessor may be killed in a (helicopter crash).Logical formLearned from10 sentences. A (plane crash) may pertain-to a military-or-other-action-organization.Logical formLearned from10 sentences.