A concept may have a history.Logical formLearned from28 sentences. A concept may pertain-to a struggle.Logical formLearned from28 sentences. A concept can be ludicrous.Logical formLearned from28 sentences. Sets can be constituted-of-or-filled-with concepts.Logical formLearned from28 sentences. A concept may help.Logical formLearned from27 sentences. Concepts may play a role.Logical formLearned from27 sentences. A concept may pertain-to a magazine.Logical formLearned from27 sentences. A proponent may pertain-to a concept.Logical formLearned from27 sentences. A variation can be on a concept.Logical formLearned from27 sentences. A concept may pertain-to a (music video).Logical formLearned from27 sentences. A concept can be geographic.Logical formLearned from27 sentences. A concept may pertain-to a course.Logical formLearned from27 sentences. Concepts may undergo a retention.Logical formLearned from27 sentences. A representation may show concepts.Logical formLearned from27 sentences. Concepts can be personal.Logical formLearned from27 sentences.