(Carbon dioxide) can be a contributor to global warming.Logical formLearned from3 sentences. A contributor can be to sales.Logical formLearned from3 sentences. A contributor can be to imbalances.Logical formLearned from3 sentences. A (contributor list) can be secret.Logical formLearned from3 sentences. Contributors can be man-made.Logical formLearned from3 sentences. A contributor can be to a perception.Logical formLearned from3 sentences. Citizens can be contributors.Logical formLearned from3 sentences. Contributors can be perennial.Logical formLearned from3 sentences. A person can be a son of a (campaign contributor).Logical formLearned from3 sentences. A contributor can be to a thread.Logical formLearned from3 sentences. Contributors can be to a profitability.Logical formLearned from3 sentences. (Campaign contributors) may pertain-to a nation.Logical formLearned from3 sentences. A contributor can be to a city.Logical formLearned from3 sentences. A contributor can be on a field.Logical formLearned from3 sentences. Persons can be a contributor to (relief efforts).Logical formLearned from3 sentences.