Natural gas may fall.Logical formLearned from93 sentences. (Greenhouse gas emissions) may pertain-to a nation.Logical formLearned from93 sentences. Gas may undergo a buildup.Logical formLearned from93 sentences. Police may lob gas.Logical formLearned from93 sentences. Gas may pertain-to a scientist.Logical formLearned from92 sentences. A (gas gauge) may pertain-to a person.Logical formLearned from92 sentences. Gas may escape.Logical formLearned from92 sentences. A (gas tank) can be empty.Logical formLearned from92 sentences. Levels may pertain-to gas.Logical formLearned from92 sentences. Gas may be produced.Logical formLearned from92 sentences. (Gas prices) can be on a rise.Logical formLearned from91 sentences. Cubic feet can be constituted-of-or-filled-with natural gas.Logical formLearned from91 sentences. A person may fill a (gas tank).Logical formLearned from91 sentences. Gas may undergo concentrations.Logical formLearned from91 sentences. Natural gas can be in storage.Logical formLearned from91 sentences.