Charlie is strong. Charlie is big. Bob is thin. Bob is tiny. Alan is kind. Dave is dull. Dave is bad. If someone is not high then they are dull. If someone is not poor then they are wealthy. If someone is kind then they are smart. If someone is smart and not rough then they are nice. If someone is dull and not high then they are sad. If someone is sad then they are short. All short people are small. If someone is thin and tiny then they are rough. If someone is rough and not smart then they are bad. If someone is bad then they are energetic. If someone is energetic then they are young. If someone is wealthy then they are quiet. If someone is quiet then they are clever. All clever people are smart. If someone is nice then they are old. All old people are experienced.
Dave is smart.