Divergent thinking is a mode of thinking that starts from a certain real thing and makes full use of the original knowledge and experience to induce all kinds of whimsy through imagination, association, analogy, and other forms. According to the above definitions, which of the following is not in divergent thinking? ['Sun-heating-heat.', 'Wave Line—Sea Wave—Sound.', 'Sweaters—cotton wool—fiber.', 'Flowers—Children—Future.']