System may prove successful.Logical formLearned from5 sentences. A country may prove a negative.Logical formLearned from5 sentences. A government may prove allegations.Logical formLearned from5 sentences. Involvement of agencies may prove that something-is-the-case.Logical formLearned from5 sentences. Research may prove fruitless.Logical formLearned from5 sentences. Allegations may be proven true.Logical formLearned from5 sentences. A person may prove him-or-herself to everyone.Logical formLearned from5 sentences. Predictions may prove right.Logical formLearned from5 sentences. A condition may prove that something-is-the-case.Logical formLearned from5 sentences. A male may prove a competence.Logical formLearned from5 sentences. Medicine may prove that something-is-the-case.Logical formLearned from5 sentences. Results may prove inconclusive.Logical formLearned from5 sentences. A philosopher may be proven.Logical formLearned from5 sentences. An one may prove controversial.Logical formLearned from5 sentences. (Police dog rebel) may prove popular with children.Logical formLearned from5 sentences.