Scenario is related to Case. Case is related to Equipment. Equipment is related to Wire. Wire is related to Communication. 
Benefit is a type of Payment. Benefit is related to Auction. Auction is a type of Bridge. 
Scenario <--RelatedTo--> Case <--RelatedTo--> Equipment <--RelatedTo--> Wire <--RelatedTo--> Communication 
Payment <--IsA-- Benefit <--RelatedTo--> Auction --IsA--> Bridge 