Charge is a type of Request. Charge is related to Cost. Cost is related to Rate. 
Guard is a type of Defender. Champion is a type of Defender. Champion is related to Rank. Rank is related to Status. 
Request <--IsA-- Charge <--RelatedTo--> Cost <--RelatedTo--> Rate 
Guard --IsA--> Defender <--IsA-- Champion <--RelatedTo--> Rank <--RelatedTo--> Status 