An object may be proven fallacious.Logical formLearned from6 sentences. A history of a country may prove that something-is-the-case.Logical formLearned from6 sentences. History may prove true.Logical formLearned from6 sentences. Persons may prove a male.Logical formLearned from6 sentences. A meeting may prove productive.Logical formLearned from6 sentences. A win may prove that something-is-the-case.Logical formLearned from6 sentences. An approach may prove costly.Logical formLearned from6 sentences. A warning may prove accurate.Logical formLearned from6 sentences. Workers may prove that something-is-the-case.Logical formLearned from6 sentences. A technology may prove feasible.Logical formLearned from6 sentences. A theory may be proven false.Logical formLearned from6 sentences. A test may prove an innocence.Logical formLearned from6 sentences. A deal may prove costly.Logical formLearned from6 sentences. A (drug trade) may prove immune to efforts.Logical formLearned from6 sentences. A group of entrepreneurs may prove that something-is-the-case.Logical formLearned from6 sentences.