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