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