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