Aide is a type of Assistant. Aide is related to Servant. Servant is related to Modern. Modern is related to Stuff. 
you are likely to find Water in/at/on Closet. you are likely to find Ball in/at/on Closet. Ball is related to Found. 
Assistant <--IsA-- Aide <--RelatedTo--> Servant <--RelatedTo--> Modern <--RelatedTo--> Stuff 
Water --AtLocation--> Closet <--AtLocation-- Ball <--RelatedTo--> Found 