Some countries may contribute troops.Logical formLearned from21 sentences. A female may contribute an essay.Logical formLearned from21 sentences. A person may contribute to a study.Logical formLearned from21 sentences. Persons may contribute to a fight.Logical formLearned from21 sentences. A visit may contribute.Logical formLearned from20 sentences. A factor may contribute.Logical formLearned from20 sentences. A male may contribute to a male.Logical formLearned from20 sentences. Activities may contribute.Logical formLearned from20 sentences. Factors may contribute to differences.Logical formLearned from20 sentences. Factors may contribute to a development.Logical formLearned from20 sentences. Guys may contribute.Logical formLearned from20 sentences. Human beings may contribute to global warming.Logical formLearned from20 sentences. A department may contribute toward (business goals).Logical formLearned from20 sentences. Human activities may contribute to global warming.Logical formLearned from20 sentences. Hurry may contribute upon a hymnology.Logical formLearned from20 sentences.