Nurse is related to Worker. Servant is a type of Worker. Servant is related to Sure. Sure is a synonym of Positive. 
Bar is related to Building. you are likely to find Shareholder in/at/on Building. you are likely to find Shareholder in/at/on Company. Company have Earnings. 
Nurse <--RelatedTo--> Worker <--IsA-- Servant <--RelatedTo--> Sure <--Synonym--> Positive 
Bar <--RelatedTo--> Building <--AtLocation-- Shareholder --AtLocation--> Company --HasA--> Earnings 