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