Inside is related to Egg. Egg is a type of Food. Potato is a type of Food. you are likely to find Potato in/at/on Stomach. 
you are likely to find Human in/at/on Plane. you are likely to find Human in/at/on Automobile. you are likely to find Horn in/at/on Automobile. 
Inside <--RelatedTo--> Egg --IsA--> Food <--IsA-- Potato --AtLocation--> Stomach 
Plane <--AtLocation-- Human --AtLocation--> Automobile <--AtLocation-- Horn 