(Gas hydrates) may undergo a formation.Logical formLearned from21 sentences. (Gas sands) can be tight.Logical formLearned from21 sentences. (Greenhouse gas emissions) may increase.Logical formLearned from21 sentences. Persons may use gas.Logical formLearned from21 sentences. A sphere can be constituted-of-or-filled-with gas.Logical formLearned from21 sentences. Oxygen can be gas.Logical formLearned from21 sentences. A (gas cloud) can be poisonous.Logical formLearned from21 sentences. Gas can be odorous.Logical formLearned from21 sentences. Ozone can be (greenhouse gas).Logical formLearned from21 sentences. A contributor can be to (greenhouse gas emissions).Logical formLearned from21 sentences. Pledges may fall short of reductions of (greenhouse gas emissions).Logical formLearned from21 sentences. A (greenhouse gas pollution) may pertain-to the world.Logical formLearned from21 sentences. (Gas fields) can be depleted.Logical formLearned from21 sentences. Gas can be refined.Logical formLearned from21 sentences. (Gas supplies) can be turkmen.Logical formLearned from21 sentences.