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