Alan is big. Alan is huge. Bob is little. Bob is short. Anne is wealthy. Erin is dull. Erin is bad. If someone is not high then they are dull. If someone is not poor then they are nice. If someone is wealthy then they are quiet. If someone is quiet and not rough then they are kind. If someone is dull and not high then they are sad. If someone is little and short then they are rough. If someone is rough and not quiet then they are bad. All nice people are smart. 
Erin is not smart.