you are likely to find Actor in/at/on Theater. you are likely to find Theater in/at/on City. you are likely to find Supermarket in/at/on City. 
Music can be Universal. Music is related to Party. Balloon can be used for Party. 
Actor --AtLocation--> Theater --AtLocation--> City <--AtLocation-- Supermarket 
Universal <--HasProperty-- Music <--RelatedTo--> Party <--UsedFor-- Balloon 