Alan is strong. Alan is huge. Bob is tiny. Bob is thin. Charlie is kind. Anne is rough. Anne is poor. If someone is not high then they are rough. If someone is not bad then they are clever. If someone is kind then they are quiet. If someone is quiet and not sad then they are wealthy. If someone is rough and not high then they are dull. All dull people are short. If someone is tiny and thin then they are sad. If someone is sad and not quiet then they are poor. If someone is poor then they are young. If someone is clever then they are smart. All smart people are nice. All wealthy people are experienced. 
Alan is not short.