Imports can be a coal.Logical formLearned from16 sentences. A (coal mine blast) may pertain-to a weekday.Logical formLearned from15 sentences. A (coal mine gas blast) may pertain-to a country.Logical formLearned from15 sentences. A country may close some (coal mines).Logical formLearned from15 sentences. A (coal mine safety administration) can be provincial.Logical formLearned from15 sentences. A (coal mine safety supervision bureau) can be provincial.Logical formLearned from15 sentences. A (coal mine explosion) may pertain-to a weekday.Logical formLearned from15 sentences. A (coal output) can be raw.Logical formLearned from15 sentences. A byproduct can be constituted-of-or-filled-with (burning coal).Logical formLearned from15 sentences. A (coal producer) can be in the world.Logical formLearned from15 sentences. A (coal mine explosion) may pertain-to a us-state.Logical formLearned from15 sentences. (Coal gas) may undergo a development.Logical formLearned from15 sentences. President may pertain-to a (coal company).Logical formLearned from15 sentences. A heart may pertain-to a (coal mining zone).Logical formLearned from15 sentences. A coal may pertain-to a region.Logical formLearned from15 sentences.