A (coal supply) may pertain-to a country.Logical formLearned from14 sentences. A (coal fire) can be underground.Logical formLearned from14 sentences. Coal may remain a source of energy.Logical formLearned from14 sentences. Electricity may be produced from coal.Logical formLearned from14 sentences. A war can be on coal.Logical formLearned from14 sentences. (Coal mines) can be in a region.Logical formLearned from14 sentences. (Coal miners) may undergo a rescue.Logical formLearned from14 sentences. Coal can be in a canadian-province.Logical formLearned from14 sentences. (Coal resources) may pertain-to a country.Logical formLearned from14 sentences. Some percent can be constituted-of-or-filled-with some coal.Logical formLearned from14 sentences. (Surface mining) can be for coal.Logical formLearned from14 sentences. (Coal preparation) may undergo a definition.Logical formLearned from14 sentences. Research can be on coal.Logical formLearned from14 sentences. (Coal reserve) may pertain-to a us-state.Logical formLearned from14 sentences. A person may have coal.Logical formLearned from14 sentences.