Commodity is related to Gold. you are likely to find Gold in/at/on Church. Church is related to Cross. 
you are likely to find Wheel in/at/on Trunk. you are likely to find Tire in/at/on Trunk. 
Commodity <--RelatedTo--> Gold --AtLocation--> Church <--RelatedTo--> Cross 
Wheel --AtLocation--> Trunk <--AtLocation-- Tire 