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