A contribution may pertain-to a government.Logical formLearned from279 sentences. A contribution can be serious.Logical formLearned from279 sentences. Contributions can be to science.Logical formLearned from277 sentences. A contribution can be to a campaign.Logical formLearned from275 sentences. A contribution can be to peace.Logical formLearned from275 sentences. A contribution may pertain-to a company.Logical formLearned from272 sentences. A contribution can be to a war.Logical formLearned from267 sentences. A contribution can be negative.Logical formLearned from266 sentences. Contributions can be mandatory.Logical formLearned from263 sentences. A contribution may pertain-to a continent.Logical formLearned from262 sentences. Contributions can be creative.Logical formLearned from261 sentences. Contributions may pertain-to a doctor.Logical formLearned from259 sentences. A contribution can be illegal.Logical formLearned from255 sentences. A contribution can be to the economy.Logical formLearned from254 sentences. Contributions can be by a male.Logical formLearned from253 sentences.