A (coal mine) can be ukrainian.Logical formLearned from74 sentences. (Coal mines) may pertain-to a nation.Logical formLearned from74 sentences. A coal may pertain-to a nation.Logical formLearned from73 sentences. (Coal reserve) may pertain-to the world.Logical formLearned from73 sentences. A daughter may pertain-to a (coal miner).Logical formLearned from73 sentences. A (coal consumption) may pertain-to a country.Logical formLearned from72 sentences. Some (coal miners) may be killed.Logical formLearned from71 sentences. A coal may pertain-to a country.Logical formLearned from70 sentences. Coal may be used.Logical formLearned from70 sentences. A shortage can be constituted-of-or-filled-with coal.Logical formLearned from70 sentences. (Coal mines) can be unsafe.Logical formLearned from69 sentences. A (coal industry) may pertain-to a us-state.Logical formLearned from69 sentences. (Coal mines) can be in a country.Logical formLearned from69 sentences. A seam can be constituted-of-or-filled-with coal.Logical formLearned from69 sentences. A canary can be in a (coal mine).Logical formLearned from69 sentences.