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