Servant is related to Serving. Serving is a synonym of Service. Utility is a type of Service. 
Costume is a type of Supply. Offer is a type of Supply. Offer is related to Ring. 
Servant <--RelatedTo--> Serving <--Synonym--> Service <--IsA-- Utility 
Costume --IsA--> Supply <--IsA-- Offer <--RelatedTo--> Ring 