Changes may prove that something-is-the-case.Logical formLearned from5 sentences. A male may prove a decision.Logical formLearned from5 sentences. Champion may prove strong.Logical formLearned from5 sentences. A hierarchy may prove deficient in a supervision of activities.Logical formLearned from5 sentences. Some (rescue measures) may prove ineffectual.Logical formLearned from5 sentences. Transplants may prove effective in treating (blood diseases).Logical formLearned from5 sentences. Means may prove inadequate.Logical formLearned from5 sentences. A country may prove a supremacy.Logical formLearned from5 sentences. Genetic tests may prove that something-is-the-case.Logical formLearned from5 sentences. Negotiations may prove fruitful.Logical formLearned from5 sentences. A vaccine may be proven effective.Logical formLearned from5 sentences. A striker may prove a value.Logical formLearned from5 sentences. A worker may prove unsuitable.Logical formLearned from5 sentences. A world-city may prove successful.Logical formLearned from5 sentences. A male may prove potential.Logical formLearned from5 sentences.