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