(Carbon dioxide) may be liquefied.Logical formLearned from15 sentences. (Carbon gases) can be from (burning fossil fuel).Logical formLearned from15 sentences. Sign may pertain-to carbon.Logical formLearned from15 sentences. (Carbon copies) can be pale.Logical formLearned from15 sentences. (Poker sites) can be in sign of carbon.Logical formLearned from15 sentences. (Carbon nanotubes) may undergo a production.Logical formLearned from15 sentences. A part may pertain-to a (carbon cycle).Logical formLearned from15 sentences. (Emission scenarios) may keep (carbon dioxide).Logical formLearned from15 sentences. Trends can be in reducing a (carbon footprint).Logical formLearned from15 sentences. A (carbon footprint) may pertain-to a convention.Logical formLearned from15 sentences. A government may go with a (carbon emission trading scheme).Logical formLearned from15 sentences. A link can be between (carbon dioxide).Logical formLearned from15 sentences. Some molecules can be constituted-of-or-filled-with (carbon dioxide).Logical formLearned from15 sentences. (Carbon emissions) can be from deforestation.Logical formLearned from15 sentences. (Carbon capture) may give (coal power) a lease.Logical formLearned from15 sentences.