A person may contribute vocals.Logical formLearned from18 sentences. A person may contribute an essay.Logical formLearned from18 sentences. Changes may contribute.Logical formLearned from18 sentences. (Carbon emissions) may contribute to global warming.Logical formLearned from18 sentences. Companies may contribute.Logical formLearned from18 sentences. Persons may contribute money.Logical formLearned from18 sentences. Factors may contribute to a crisis.Logical formLearned from18 sentences. Factors may contribute to growth.Logical formLearned from18 sentences. A paper may contribute to a debate.Logical formLearned from18 sentences. A person may contribute to a project.Logical formLearned from18 sentences. A sale may contribute to a foreign policy.Logical formLearned from18 sentences. Mutations may contribute to disorders.Logical formLearned from18 sentences. Factors may contribute to an outcome.Logical formLearned from18 sentences. Companies may contribute amendments.Logical formLearned from18 sentences. A female may contribute to a post.Logical formLearned from18 sentences.