Contributions can be to mathematical sciences.Logical formLearned from13 sentences. A contribution of a paper can be that something-is-the-case.Logical formLearned from13 sentences. (Cash contributions) can be voluntary.Logical formLearned from13 sentences. Contribution may undergo a payment.Logical formLearned from13 sentences. Contributions may pertain-to others.Logical formLearned from13 sentences. Contributions can be discretionary.Logical formLearned from13 sentences. Contributions can be to races.Logical formLearned from13 sentences. A contribution can be to a decline.Logical formLearned from13 sentences. Award can be for contribution.Logical formLearned from13 sentences. Some contributions can be to a volume.Logical formLearned from13 sentences. A contribution can be constituted-of-or-filled-with services.Logical formLearned from13 sentences. A (signal contribution) may pertain-to a male.Logical formLearned from13 sentences. Contributions may be made to organizations.Logical formLearned from13 sentences. (Research contributions) can be seminal.Logical formLearned from13 sentences. A contribution can be to an event.Logical formLearned from13 sentences.