Alan is high. Alan is huge. Bob is little. Bob is thin. Harry is wealthy. Dave is poor. Dave is dull. If someone is not big then they are poor. If someone is not rough then they are kind. If someone is wealthy then they are smart. If someone is smart and not sad then they are nice. If someone is poor and not big then they are bad. If someone is little and thin then they are sad. If someone is sad and not smart then they are dull. All kind people are quiet. 
Dave is not quiet.