Dave is big. Dave is strong. Gary is short. Gary is thin. Alan is nice. Harry is rough. Harry is dull. If someone is not huge then they are rough. If someone is not bad then they are wealthy. If someone is nice then they are smart. If someone is smart and not poor then they are kind. If someone is rough and not huge then they are sad. If someone is sad then they are small. All small people are little. If someone is short and thin then they are poor. If someone is poor and not smart then they are dull. If someone is dull then they are energetic. If someone is energetic then they are young. If someone is wealthy then they are clever. If someone is clever then they are quiet. All quiet people are smart. If someone is kind then they are experienced. All experienced people are old.
Harry is not smart.