Net is a synonym of Catch. 
you are likely to find Basketball in/at/on Closet. Shelf is part of Closet. you are likely to find Note in/at/on Shelf. Note is related to Task. 
Net <--Synonym--> Catch 
Basketball --AtLocation--> Closet <--PartOf-- Shelf <--AtLocation-- Note <--RelatedTo--> Task 