Harry is high. Harry is big. Dave is small. Dave is short. Gary is quiet. Alan is sad. Alan is bad. If someone is not huge then they are sad. If someone is not dull then they are kind. If someone is quiet then they are clever. If someone is clever and not poor then they are smart. If someone is sad and not huge then they are rough. All rough people are tiny. If someone is small and short then they are poor. If someone is poor and not clever then they are bad. If someone is bad then they are young. If someone is kind then they are nice. All nice people are wealthy. All smart people are experienced. 
Dave is young.