Coal may undergo a combustion.Logical formLearned from213 sentences. Coal may be mined.Logical formLearned from209 sentences. A (coal producer) may pertain-to a country.Logical formLearned from205 sentences. Jobs can be with clean coal.Logical formLearned from205 sentences. A reliance can be on coal.Logical formLearned from202 sentences. A country may rely on coal.Logical formLearned from189 sentences. (Coal mines) can be abandoned.Logical formLearned from186 sentences. Supplies can be constituted-of-or-filled-with coal.Logical formLearned from184 sentences. A percent may pertain-to a coal.Logical formLearned from184 sentences. A bed can be constituted-of-or-filled-with coals.Logical formLearned from180 sentences. Coal may undergo a discovery.Logical formLearned from180 sentences. A (coal mine) can be in a country.Logical formLearned from178 sentences. A (coal mining industry) may pertain-to a country.Logical formLearned from177 sentences. A coal can be hot.Logical formLearned from173 sentences. Reserve can be constituted-of-or-filled-with coal.Logical formLearned from171 sentences.