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