Rescue is the opposite of Capture. Bag is a type of Capture. Bag can be used for Traveler. Visitor is a type of Traveler. 
Added is a form of Add. Add is related to Join. 
Rescue <--Antonym--> Capture <--IsA-- Bag --UsedFor--> Traveler <--IsA-- Visitor 
Added --FormOf--> Add <--RelatedTo--> Join 