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