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