A male may wear a (gas mask).Logical formLearned from16 sentences. An atmosphere can be constituted-of-or-filled-with inert gas.Logical formLearned from16 sentences. Thousands can be constituted-of-or-filled-with gas.Logical formLearned from16 sentences. A (gas explosion) may kill some persons.Logical formLearned from16 sentences. (Nerve gas) may be used in an attack.Logical formLearned from16 sentences. A resident may report a (gas leak).Logical formLearned from16 sentences. (Nerve gas attacks) can be on subways.Logical formLearned from16 sentences. A person may have gas.Logical formLearned from16 sentences. A cut can be in (greenhouse gas emissions).Logical formLearned from16 sentences. (Gas reserve) can be in a country.Logical formLearned from16 sentences. (Gas deliveries) may resume.Logical formLearned from16 sentences. Gas may be took.Logical formLearned from16 sentences. (Gas transit) can be to a continent.Logical formLearned from16 sentences. (Gas supplies) may undergo a restoration.Logical formLearned from16 sentences. (Gas prices) may plunge.Logical formLearned from16 sentences.