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