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