Revenue is the opposite of Cost. Cost is related to Required. Required is related to Need. Need is a type of Context. 
Cold is related to Fish. Fish is related to Water. you are likely to find Water in/at/on Mouth. 
Revenue <--Antonym--> Cost <--RelatedTo--> Required <--RelatedTo--> Need --IsA--> Context 
Cold <--RelatedTo--> Fish <--RelatedTo--> Water --AtLocation--> Mouth 