A (methane blast) may rip through a (coal mine).Logical formLearned from31 sentences. Water may flood a mine.Logical formLearned from31 sentences. A (gas explosion) can be in a mine.Logical formLearned from31 sentences. Some mine can be in a region.Logical formLearned from31 sentences. A (gold mine) may pertain-to a country.Logical formLearned from31 sentences. Persons may have mines.Logical formLearned from31 sentences. Work can be in a mine.Logical formLearned from31 sentences. A (death toll) can be from a (coal mine blast).Logical formLearned from31 sentences. A mine can be in city.Logical formLearned from31 sentences. A sale may pertain-to a mine.Logical formLearned from31 sentences. A (gold mine) can be defunct.Logical formLearned from31 sentences. Mines may operate.Logical formLearned from31 sentences. Mines may explode.Logical formLearned from31 sentences. A blast can be at a mine.Logical formLearned from31 sentences. A mine can be open.Logical formLearned from31 sentences.