Some workers can be on (contribution rolls).Logical formLearned from56 sentences. Contributions can be to projects.Logical formLearned from56 sentences. Contributions can be to psychology.Logical formLearned from56 sentences. Contributions can be from a government.Logical formLearned from56 sentences. A contribution can be to football.Logical formLearned from56 sentences. A contribution may pertain-to a book.Logical formLearned from56 sentences. Contributions can be to politicians.Logical formLearned from56 sentences. Contributions can be to development.Logical formLearned from56 sentences. A contribution can be in a show.Logical formLearned from56 sentences. A contribution can be to an environment.Logical formLearned from56 sentences. Contributions can be daily.Logical formLearned from56 sentences. A person may appreciate contributions.Logical formLearned from56 sentences. Contributions may make a difference.Logical formLearned from56 sentences. Contributions can be to an international-political-entity.Logical formLearned from56 sentences. Contributions can be to a system.Logical formLearned from56 sentences.