Lesson is a synonym of Moral. Moral is related to Theme. Theme is related to Movie. 
Low is related to Servant. Servant is related to Rich. Rich is a synonym of Wealthy. Wealthy is related to Gold. 
Lesson <--Synonym--> Moral <--RelatedTo--> Theme <--RelatedTo--> Movie 
Low <--RelatedTo--> Servant <--RelatedTo--> Rich <--Synonym--> Wealthy <--RelatedTo--> Gold 