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