(Gas levels) can be high.Logical formLearned from11 sentences. A reduction can be in gas.Logical formLearned from11 sentences. Atoms can be in gas.Logical formLearned from11 sentences. Supplies can be constituted-of-or-filled-with (chlorine gas).Logical formLearned from11 sentences. A change can be in (gas prices).Logical formLearned from11 sentences. A natural gas can be explosive.Logical formLearned from11 sentences. Gas can be safe.Logical formLearned from11 sentences. Gas can be dry.Logical formLearned from11 sentences. Gas can be continuous.Logical formLearned from11 sentences. A (doomsday cult) may carry_out some (subway gas attack).Logical formLearned from11 sentences. A (gas cloud) may escape from a factory.Logical formLearned from11 sentences. A blend can be constituted-of-or-filled-with gas.Logical formLearned from11 sentences. Troops may use (mustard gas).Logical formLearned from11 sentences. A (gas chamber) can be as a method of execution.Logical formLearned from11 sentences. Gas can be concentrated.Logical formLearned from11 sentences.