Erin is high. Erin is strong. Dave is short. Dave is small. Charlie is nice. Bob is rough. Bob is bad. If someone is not huge then they are rough. If someone is not poor then they are wealthy. If someone is nice 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 bad. All wealthy people are smart. 
Erin is not sad.