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