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