A contribution can be courageous.Logical formLearned from14 sentences. Contributions can be constituted-of-or-filled-with labor.Logical formLearned from14 sentences. Contributions can be to (relief efforts).Logical formLearned from14 sentences. A person may receive a contribution.Logical formLearned from14 sentences. A reminder may pertain-to a contribution.Logical formLearned from14 sentences. A contribution may pertain-to an article.Logical formLearned from14 sentences. A contribution can be irrevocable.Logical formLearned from14 sentences. A contribution can be to human knowledge.Logical formLearned from14 sentences. A contribution may pertain-to a volume.Logical formLearned from14 sentences. A contribution can be a contribution.Logical formLearned from14 sentences. A contribution may pertain-to workers.Logical formLearned from14 sentences. Contributions can be to school.Logical formLearned from14 sentences. Contributions can be to literature of (engineering theory).Logical formLearned from14 sentences. Contributions may undergo an investment.Logical formLearned from14 sentences. A contribution can be to higher education.Logical formLearned from14 sentences.