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