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