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