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