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