Erin is huge. Erin is strong. Alan is short. Alan is little. Harry is nice. Dave is rough. Dave 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 sad then they are kind. If someone is rough and not big then they are poor. If someone is short and little then they are sad. If someone is sad and not wealthy then they are dull. All quiet people are smart. 
Erin is not poor.