(Emission credits) may undergo a purchase.Logical formLearned from13 sentences. (Emission targets) can be stringent.Logical formLearned from13 sentences. (Greenhouse gas emissions) may undergo an increase.Logical formLearned from13 sentences. Emissions may pertain-to countries.Logical formLearned from13 sentences. (Greenhouse gas emissions) can be in a us-state.Logical formLearned from13 sentences. A market can be in (carbon emissions).Logical formLearned from13 sentences. (Carbon dioxide emissions) may undergo an increase.Logical formLearned from12 sentences. A (greenhouse gas emission) can be global.Logical formLearned from12 sentences. Emissions can be international.Logical formLearned from12 sentences. (Carbon dioxide emissions) may pertain-to cars.Logical formLearned from12 sentences. A percent may pertain-to (sulfur dioxide emissions).Logical formLearned from12 sentences. A country may reduce emissions.Logical formLearned from12 sentences. Dioxins may undergo an emission.Logical formLearned from12 sentences. Emissions of gases may be reduced.Logical formLearned from12 sentences. Taxes can be on (carbon dioxide emissions).Logical formLearned from12 sentences.