A cause of an accident can be unknown.Logical formLearned from270 sentences. A female may die of natural causes.Logical formLearned from269 sentences. A cause may pertain-to an error.Logical formLearned from264 sentences. A cause can be rare.Logical formLearned from263 sentences. A cause can be unclear.Logical formLearned from263 sentences. Causes may pertain-to a financial crisis.Logical formLearned from259 sentences. A cause may pertain-to explosions.Logical formLearned from259 sentences. A cause can be awesome.Logical formLearned from257 sentences. Some cause can be constituted-of-or-filled-with death.Logical formLearned from257 sentences. A cause of a crash may be investigated.Logical formLearned from256 sentences. A (reunification cause) may pertain-to a country.Logical formLearned from255 sentences. A cause may pertain-to a derailment.Logical formLearned from254 sentences. A cause can be constituted-of-or-filled-with cancer.Logical formLearned from254 sentences. A cause may be found.Logical formLearned from254 sentences. A cause may pertain-to blasts.Logical formLearned from254 sentences.