Bob is high. Bob is big. Charlie is thin. Charlie is little. Fiona is nice. Gary is rough. Gary is poor. If someone is not strong then they are rough. If someone is not sad then they are kind. If someone is nice then they are quiet. If someone is quiet and not bad then they are wealthy. If someone is rough and not strong then they are dull. If someone is thin and little then they are bad. If someone is bad and not quiet then they are poor. All kind people are smart. 
Bob is not dull.