Dave is high. Dave is strong. Charlie is small. Charlie is short. Fiona is clever. Harry is sad. Harry is dull. If someone is not huge then they are sad. If someone is not bad then they are nice. If someone is clever then they are wealthy. If someone is wealthy and not poor then they are quiet. If someone is sad and not huge then they are rough. All rough people are little. If someone is small and short then they are poor. If someone is poor and not wealthy then they are dull. If someone is dull then they are young. If someone is nice then they are kind. All kind people are smart. All quiet people are experienced. 
Harry is not smart.