you are likely to find Monster in/at/on Bed. Bed is related to Poster. Poster is related to Flag. 
you are likely to find Role in/at/on Play. Complete is a type of Play. Complete is a synonym of Turn. 
Monster --AtLocation--> Bed <--RelatedTo--> Poster <--RelatedTo--> Flag 
Role --AtLocation--> Play <--IsA-- Complete <--Synonym--> Turn 