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