A male may prove skills.Logical formLearned from20 sentences. The police may prove that something-is-the-case.Logical formLearned from20 sentences. A male may prove a male.Logical formLearned from20 sentences. A person may prove an existence of a satanic (ritual abuse) of children.Logical formLearned from20 sentences. Student may prove himself.Logical formLearned from20 sentences. A military-or-other-action-organization may prove that something-is-the-case.Logical formLearned from20 sentences. An intensification of stress may prove a drag.Logical formLearned from20 sentences. Evidence may prove that something-is-the-case.Logical formLearned from20 sentences. A bureau may prove a case.Logical formLearned from20 sentences. A (company flyer) may prove true.Logical formLearned from20 sentences. (Game tests) may prove this-crysis.Logical formLearned from20 sentences. An estimate may prove correct.Logical formLearned from20 sentences. A case may prove an embarrassment.Logical formLearned from20 sentences. A system may prove successful.Logical formLearned from20 sentences. A process may prove that something-is-the-case.Logical formLearned from20 sentences.