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