Canaries can be in (coal mines).Logical formLearned from17 sentences. Mines can be serpentine.Logical formLearned from17 sentences. A mine can be serpentine.Logical formLearned from17 sentences. (Oxygen stores) can be in a mine.Logical formLearned from17 sentences. A truck may hit a (land mine).Logical formLearned from17 sentences. Director may pertain-to a mine.Logical formLearned from17 sentences. A (methane gas explosion) can be at a (coal mine).Logical formLearned from17 sentences. An (iron ore mine) may undergo an expansion.Logical formLearned from17 sentences. Mines can be with (safety standards).Logical formLearned from17 sentences. A blast may occur at a mine.Logical formLearned from17 sentences. A vehicle may strike a mine.Logical formLearned from17 sentences. Rebels may set_off a mine.Logical formLearned from17 sentences. Some mines can be in some states.Logical formLearned from17 sentences. Some workers may be trapped in a mine.Logical formLearned from17 sentences. A mine may have injuries.Logical formLearned from17 sentences.