A (greenhouse gas) may cause global warming.Logical formLearned from16 sentences. Gas may ignite.Logical formLearned from16 sentences. Gas can be liquid.Logical formLearned from16 sentences. Natural gas may become a fuel of choice.Logical formLearned from16 sentences. A country may get gas.Logical formLearned from16 sentences. An inventory may pertain-to (greenhouse gas emissions).Logical formLearned from16 sentences. Persons may have natural gas.Logical formLearned from16 sentences. Gas may be involved.Logical formLearned from16 sentences. Natural gas may be extracted.Logical formLearned from16 sentences. A (gas pipeline) can be parallel.Logical formLearned from16 sentences. Gas can be in a galaxy.Logical formLearned from16 sentences. A natural gas can be affordable.Logical formLearned from16 sentences. Gas can be in the world.Logical formLearned from16 sentences. Changes can be in (greenhouse gas concentrations).Logical formLearned from16 sentences. Concerns can be over (greenhouse gas emissions).Logical formLearned from16 sentences.