A (death toll) can be from a (gas blast).Logical formLearned from20 sentences. (Climate change) may be caused by (greenhouse gas emissions).Logical formLearned from20 sentences. Gas can be in a world-city.Logical formLearned from20 sentences. A (greenhouse gas) can be effective.Logical formLearned from20 sentences. A natural gas may be used.Logical formLearned from20 sentences. A reservoir can be constituted-of-or-filled-with gas.Logical formLearned from20 sentences. A sample may pertain-to gas.Logical formLearned from20 sentences. Gas may undergo an expulsion.Logical formLearned from20 sentences. Gas may be flared.Logical formLearned from20 sentences. A (gas leak) may occur.Logical formLearned from20 sentences. (Gas cylinders) can be high-pressure.Logical formLearned from20 sentences. A (gas station) can be at a road.Logical formLearned from20 sentences. Atoms can be in gas.Logical formLearned from20 sentences. (Gas fields) can be contested.Logical formLearned from20 sentences. An alternative can be to natural gas.Logical formLearned from20 sentences.