Candidate is related to Mate. Mate is a type of Officer. Officer is related to Rank. Rank is related to Chart. 
Mentor is a type of Intellectual. Intellectual is a type of Person. Ancient is a type of Person. 
Candidate <--RelatedTo--> Mate --IsA--> Officer <--RelatedTo--> Rank <--RelatedTo--> Chart 
Mentor --IsA--> Intellectual --IsA--> Person <--IsA-- Ancient 