A national-agency may investigate a crash.Logical formLearned from10 sentences. Officials may blame a crash on problems.Logical formLearned from10 sentences. A person may die in some (helicopter crash).Logical formLearned from10 sentences. A crash may kill some personnel.Logical formLearned from10 sentences. A crash may be blamed on (engine problems).Logical formLearned from10 sentences. A crash may halfway through a (time trial).Logical formLearned from10 sentences. A male may die in some crash.Logical formLearned from10 sentences. A male may arrive at a (crash site).Logical formLearned from10 sentences. An a-310 may undergo a crash.Logical formLearned from10 sentences. A granddaughter can be in a (car crash).Logical formLearned from10 sentences. A passenger may survive a crash.Logical formLearned from10 sentences. Some women may die in a crash.Logical formLearned from10 sentences. A person may be perished in a crash.Logical formLearned from10 sentences. Persons may be injured in crashes.Logical formLearned from10 sentences. A hijacking may end in a crash.Logical formLearned from10 sentences.