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