Dave is big. Dave is huge. Bob is short. Bob is little. Charlie is nice. Harry is poor. Harry is bad. If someone is not strong then they are poor. If someone is not dull then they are quiet. If someone is nice then they are clever. If someone is clever and not sad then they are wealthy. If someone is poor and not strong then they are rough. All rough people are thin. If someone is short and little then they are sad. If someone is sad and not clever then they are bad. If someone is bad then they are young. If someone is quiet then they are smart. All smart people are kind. All wealthy people are old. 
Dave is thin.