A contribution can be to science.Logical formLearned from253 sentences. Contributions can be innovative.Logical formLearned from252 sentences. Contributions can be from a female.Logical formLearned from251 sentences. A contribution can be to a (war effort).Logical formLearned from251 sentences. A contribution may pertain-to a state.Logical formLearned from249 sentences. Contributions can be from a country.Logical formLearned from245 sentences. Contributions can be required.Logical formLearned from239 sentences. Contributions can be from persons.Logical formLearned from237 sentences. A contribution can be to a field.Logical formLearned from237 sentences. A contribution may pertain-to work.Logical formLearned from235 sentences. (Campaign contributions) may pertain-to a male.Logical formLearned from235 sentences. A contribution can be fundamental.Logical formLearned from234 sentences. Contributions can be from sources.Logical formLearned from234 sentences. Contributions can be from corporations.Logical formLearned from232 sentences. A contribution can be to peace.Logical formLearned from232 sentences.