Care is a type of Work. you are likely to find Worker in/at/on Work. Educator is a type of Worker. 
Cop is a synonym of Police. Police is related to Protest. Protest is a type of Complain. Complain is a synonym of Beef. 
Care --IsA--> Work <--AtLocation-- Worker <--IsA-- Educator 
Cop <--Synonym--> Police <--RelatedTo--> Protest --IsA--> Complain <--Synonym--> Beef 