A contribution can be qualified.Logical formLearned from13 sentences. A contribution can be to a world.Logical formLearned from13 sentences. Contributions can be payable.Logical formLearned from13 sentences. A contribution may be published.Logical formLearned from13 sentences. A contribution can be an attempt.Logical formLearned from13 sentences. A contribution can be compelling.Logical formLearned from13 sentences. Contributions can be inestimable.Logical formLearned from13 sentences. Contributions can be varying.Logical formLearned from13 sentences. (Conduit contributions) can be illegal.Logical formLearned from13 sentences. A contribution may be returned.Logical formLearned from13 sentences. A contribution can be to countries.Logical formLearned from13 sentences. Contributions can be to discussion.Logical formLearned from13 sentences. Contributions can be from visitors.Logical formLearned from13 sentences. A contribution can be to innovation.Logical formLearned from13 sentences. A contribution can be to persons.Logical formLearned from13 sentences.