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