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