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