Necessary is related to Eat. Eat is related to Birthday. Birthday is the opposite of New. New is related to Innovative. 
Rescue is a synonym of Delivery. Passage is a type of Delivery. 
Necessary <--RelatedTo--> Eat <--RelatedTo--> Birthday <--Antonym--> New <--RelatedTo--> Innovative 
Rescue <--Synonym--> Delivery <--IsA-- Passage 