you are likely to find Food in/at/on Park. you are likely to find Food in/at/on Trash. 
Open is a different concept from Closed. Closed is related to Punch. Punch is related to Attack. Attack is a synonym of Attempt. 
Park <--AtLocation-- Food --AtLocation--> Trash 
Open <--DistinctFrom--> Closed <--RelatedTo--> Punch <--RelatedTo--> Attack <--Synonym--> Attempt 