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