Vehicle is related to Tank. Tank is related to Zone. 
Ignore is the opposite of Rescue. Rescue is related to Adopt. Adopt is related to Related. Related is related to Deliver. 
Vehicle <--RelatedTo--> Tank <--RelatedTo--> Zone 
Ignore <--Antonym--> Rescue <--RelatedTo--> Adopt <--RelatedTo--> Related <--RelatedTo--> Deliver 