Dave is big. Dave is high. Erin is little. Erin is short. Alan is quiet. Bob is sad. Bob is dull. If someone is not huge then they are sad. If someone is not poor 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 huge then they are bad. 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. 
Erin is not dull.