A demand can be for coal.Logical formLearned from46 sentences. A (gas explosion) may tear through a (coal mine).Logical formLearned from46 sentences. Sources can be constituted-of-or-filled-with coal.Logical formLearned from45 sentences. Beds can be constituted-of-or-filled-with coal.Logical formLearned from45 sentences. Connection can be with a (coal mine).Logical formLearned from45 sentences. A (coal mine) can be in province.Logical formLearned from45 sentences. An owner may pertain-to a (coal mine).Logical formLearned from44 sentences. Coal may undergo deliveries.Logical formLearned from44 sentences. Coal can be from a country.Logical formLearned from44 sentences. A male may support clean coal.Logical formLearned from44 sentences. (Coal miners) can be ukrainian.Logical formLearned from44 sentences. Coal can be expensive.Logical formLearned from43 sentences. (Coal miners) may pertain-to a nation.Logical formLearned from43 sentences. A country can be dependent on coal.Logical formLearned from43 sentences. Dependence can be on coal.Logical formLearned from43 sentences.