Cemetery is a type of Site. Site is related to Building. Mall is a type of Building. you are likely to find Bag in/at/on Mall. 
People is related to Concert. Concert is related to Musical. Musical is related to Drum. 
Cemetery --IsA--> Site <--RelatedTo--> Building <--IsA-- Mall <--AtLocation-- Bag 
People <--RelatedTo--> Concert <--RelatedTo--> Musical <--RelatedTo--> Drum 