Some factors may contribute to differences.Logical formLearned from14 sentences. Amounts may be contributed.Logical formLearned from14 sentences. A male may contribute material.Logical formLearned from14 sentences. (Staff writer) may contribute to a column.Logical formLearned from14 sentences. A male may contribute to the atmosphere.Logical formLearned from14 sentences. Everyone may contribute to a list.Logical formLearned from14 sentences. (Greenhouse gas emissions) may contribute to (climate change).Logical formLearned from14 sentences. Some partners may contribute.Logical formLearned from14 sentences. Some persons may be contributed.Logical formLearned from14 sentences. A female may contribute to a book.Logical formLearned from14 sentences. A female may contribute a chapter.Logical formLearned from14 sentences. Factors may contribute to a change.Logical formLearned from14 sentences. Actions may contribute to some (primary loss).Logical formLearned from14 sentences. A dollar may contribute.Logical formLearned from14 sentences. A person may contribute funds.Logical formLearned from14 sentences.