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