Harry is big. Harry is huge. Charlie is short. Charlie is little. Gary is wealthy. Erin is sad. Erin is rough. If someone is not high 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 dull then they are kind. If someone is sad and not high then they are poor. If someone is short and little then they are dull. If someone is dull and not quiet then they are rough. All nice people are smart. 
Erin is not smart.