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