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