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