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