A contributor can be to a (background radiation dose).Logical formLearned from4 sentences. A contributor can be to a (heat island effect).Logical formLearned from4 sentences. A perspective may pertain-to contributors.Logical formLearned from4 sentences. Contributors can be to a (building fund).Logical formLearned from4 sentences. Contributors may discuss issues.Logical formLearned from4 sentences. Some contributors may agree that something-is-the-case.Logical formLearned from4 sentences. A contributor may be given.Logical formLearned from4 sentences. Some thousands can be constituted-of-or-filled-with contributors.Logical formLearned from4 sentences. (Contact information) can be about some contributors to a conference.Logical formLearned from4 sentences. Contributors can be to environmental degradation.Logical formLearned from4 sentences. (Guest columnist) can be a contributor to a fool.Logical formLearned from4 sentences. (Fool contributor) can be cheap.Logical formLearned from4 sentences. (Fool contributor) may hold a position.Logical formLearned from4 sentences. A contributor can be foolish.Logical formLearned from4 sentences. (Fool contributor) can be a kid.Logical formLearned from4 sentences.