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