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