Northeast is a type of Location. Location is related to Register. Patent is a type of Register. 
Dinner is related to Beef. you are likely to find Beef in/at/on Plate. you are likely to find Meal in/at/on Plate. 
Northeast --IsA--> Location <--RelatedTo--> Register <--IsA-- Patent 
Dinner <--RelatedTo--> Beef --AtLocation--> Plate <--AtLocation-- Meal 