Report is related to Gather. Gather is the opposite of Spread. Export is a type of Spread. Export is a type of Film. 
you are likely to find River in/at/on Valley. River is related to Actor. 
Report <--RelatedTo--> Gather <--Antonym--> Spread <--IsA-- Export --IsA--> Film 
Valley <--AtLocation-- River <--RelatedTo--> Actor 