A coal may be sold.Logical formLearned from18 sentences. (Coal miners) may undergo deaths.Logical formLearned from18 sentences. Buckets can be constituted-of-or-filled-with coal.Logical formLearned from18 sentences. A (coal mining industry) can be underground.Logical formLearned from18 sentences. A (coal plant) may be built in a (home town).Logical formLearned from18 sentences. A form can be constituted-of-or-filled-with (coal mining).Logical formLearned from18 sentences. A (coal delayage) can be fresh.Logical formLearned from18 sentences. A (coal plant) can be dirty.Logical formLearned from18 sentences. A moratorium can be on coal.Logical formLearned from18 sentences. (Coal plants) can be with technology.Logical formLearned from18 sentences. A coal can be washed.Logical formLearned from18 sentences. (Coal mines) may close.Logical formLearned from18 sentences. A greek word can be for coal.Logical formLearned from18 sentences. A person may work in a (coal mine).Logical formLearned from18 sentences. A result can be constituted-of-or-filled-with (coal mining).Logical formLearned from18 sentences.