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