Teachers may demonstrate competency.Logical formLearned from9 sentences. A method may demonstrate that something-is-the-case.Logical formLearned from9 sentences. A number of reports may demonstrate that something-is-the-case.Logical formLearned from9 sentences. A scientific evidence may demonstrate that something-is-the-case.Logical formLearned from9 sentences. Research may demonstrate an ability.Logical formLearned from9 sentences. A fossil may demonstrate evolution.Logical formLearned from9 sentences. A male may demonstrate an approach.Logical formLearned from9 sentences. Researcher may demonstrate a new instrument.Logical formLearned from9 sentences. A love may be demonstrated.Logical formLearned from9 sentences. (Network professionals) may demonstrate knowledge.Logical formLearned from9 sentences. A political-leader may demonstrate ignorance.Logical formLearned from9 sentences. A behavior may demonstrate.Logical formLearned from9 sentences. Chefs may demonstrate a craft.Logical formLearned from9 sentences. A preview may be demonstrated.Logical formLearned from9 sentences. Protesters may demonstrate against a war.Logical formLearned from9 sentences.