Film is related to Photographer. Photographer is related to Camera. 
Mentor is a type of Intellectual. Intellectual is similar to Serious. Serious is the opposite of Ridiculous. Ridiculous is a synonym of Odd. 
Film <--RelatedTo--> Photographer <--RelatedTo--> Camera 
Mentor --IsA--> Intellectual <--SimilarTo--> Serious <--Antonym--> Ridiculous <--Synonym--> Odd 