Concepts may change.Logical formLearned from38 sentences. A concept may undergo definitions.Logical formLearned from38 sentences. A concept may pertain-to a hero.Logical formLearned from38 sentences. A person may hear a concept.Logical formLearned from38 sentences. A concept can be humanistic.Logical formLearned from38 sentences. Sons may be based on concepts.Logical formLearned from38 sentences. A person can be a concept.Logical formLearned from38 sentences. A concept can be solid.Logical formLearned from38 sentences. A concept may pertain-to a website.Logical formLearned from38 sentences. (Open rotor concept) can be interesting.Logical formLearned from38 sentences. A concept can be constituted-of-or-filled-with government.Logical formLearned from38 sentences. A person may grasp concepts.Logical formLearned from38 sentences. A concept may pertain-to an event.Logical formLearned from38 sentences. A concept can be constituted-of-or-filled-with beauty.Logical formLearned from38 sentences. A concept can be novel.Logical formLearned from38 sentences.