A person may contribute to candidates.Logical formLearned from9 sentences. A study may contribute to a debate.Logical formLearned from9 sentences. Employees may contribute to plans.Logical formLearned from9 sentences. Authors may contribute to a book.Logical formLearned from9 sentences. An agency may contribute.Logical formLearned from9 sentences. A group may contribute.Logical formLearned from9 sentences. Water may contribute.Logical formLearned from9 sentences. Some factors may contribute to a need.Logical formLearned from9 sentences. Someone may contribute information.Logical formLearned from9 sentences. A male may contribute a paper.Logical formLearned from9 sentences. Prices may contribute to a rise.Logical formLearned from9 sentences. Increases may contribute.Logical formLearned from9 sentences. Persons may contribute to development.Logical formLearned from9 sentences. Some factors may contribute to delays.Logical formLearned from9 sentences. Children may contribute.Logical formLearned from9 sentences.