A (plane crash) can be presidential.Logical formLearned from17 sentences. Types may undergo crashes.Logical formLearned from17 sentences. A (supersonic jet) may undergo a crash.Logical formLearned from17 sentences. Crashes may be caused by (accelerator problems).Logical formLearned from17 sentences. A problem can be a cause of some crashes.Logical formLearned from17 sentences. A (car crash) may leave a male.Logical formLearned from17 sentences. Some (plane crash) may leave a male with back pain.Logical formLearned from17 sentences. Some canadian soldiers may be killed in a (helicopter crash).Logical formLearned from17 sentences. Clues can be into a crash.Logical formLearned from17 sentences. A person can be responsible for a crash.Logical formLearned from17 sentences. A (surveillance helicopter) may undergo a crash.Logical formLearned from17 sentences. A crash can be unlikely.Logical formLearned from17 sentences. Injuries may be sustained in a (motorcycle crash).Logical formLearned from17 sentences. A crash may end a career.Logical formLearned from17 sentences. A (helicopter crash) may pertain-to a month.Logical formLearned from17 sentences.