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