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