Persons may provide a proof.Logical formLearned from14 sentences. A proof can be to a person.Logical formLearned from14 sentences. A proof may pertain-to authority.Logical formLearned from14 sentences. Claims may require proof.Logical formLearned from14 sentences. An onus of showing a proof may lie with a creditor.Logical formLearned from14 sentences. Some years can be a proof.Logical formLearned from14 sentences. A proof may pertain-to a story.Logical formLearned from14 sentences. A proof can be constituted-of-or-filled-with (age card).Logical formLearned from14 sentences. Proof may pertain-to a stupidity.Logical formLearned from14 sentences. A proof can be silent.Logical formLearned from14 sentences. Instrument can be in proof.Logical formLearned from14 sentences. A proof may pertain-to a belief.Logical formLearned from14 sentences. Proofs can be indisputable.Logical formLearned from14 sentences. Documents can be proof of a birthdate.Logical formLearned from14 sentences. (Advance proof) may indicate that something-is-the-case.Logical formLearned from14 sentences.