Bob is strong. Bob is huge. Alan is small. Alan is tiny. Harry is kind. Charlie is sad. Charlie is dull. If someone is not big then they are sad. If someone is not bad then they are clever. If someone is kind then they are smart. If someone is smart and not poor then they are wealthy. If someone is sad and not big then they are rough. All rough people are short. If someone is small and tiny then they are poor. If someone is poor and not smart then they are dull. If someone is dull then they are young. If someone is clever then they are quiet. All quiet people are nice. All wealthy people are old. 
Alan is not young.