A (greenhouse gas) may contribute to global warming.Logical formLearned from22 sentences. A trend may contribute to a shutdown.Logical formLearned from22 sentences. A seller may contribute to closing costs.Logical formLearned from22 sentences. A person may contribute to a country.Logical formLearned from22 sentences. Some nations may contribute to advance.Logical formLearned from22 sentences. A person may contribute money.Logical formLearned from22 sentences. A male may contribute to a buzz.Logical formLearned from22 sentences. (News researcher) may contribute to a report.Logical formLearned from22 sentences. A person may contribute a maximum.Logical formLearned from22 sentences. Some factors may contribute to a risk of exposure to (lyme disease).Logical formLearned from22 sentences. A person may contribute in some way.Logical formLearned from22 sentences. (Nitrogen oxen) may contribute to smog.Logical formLearned from22 sentences. A person may contribute to the economy.Logical formLearned from22 sentences. Drugs may contribute to a death.Logical formLearned from22 sentences. A reporter may contribute to a report.Logical formLearned from22 sentences.