A (methane explosion) can be at a mine.Logical formLearned from38 sentences. A mine can be in city.Logical formLearned from38 sentences. Mines may undergo an elimination.Logical formLearned from38 sentences. A (coal mine) can be a mine.Logical formLearned from37 sentences. Safety can be in mines.Logical formLearned from37 sentences. A mine may undergo an inspection.Logical formLearned from37 sentences. A blast may be caused by a mine.Logical formLearned from37 sentences. A person may step on a mine.Logical formLearned from37 sentences. Mines can be improvised.Logical formLearned from37 sentences. A shaft may pertain-to a mine.Logical formLearned from37 sentences. A mine can be controversial.Logical formLearned from37 sentences. A (death toll) can be from a (coal mine gas explosion).Logical formLearned from37 sentences. A (land mine) can be powerful.Logical formLearned from37 sentences. A mine may be abandoned.Logical formLearned from36 sentences. Mines may undergo a clearing.Logical formLearned from36 sentences.