you are likely to find Gold in/at/on Tooth. Tooth is related to Fill. Fill is related to Car. Car is related to Porch. 
Code is a type of Tag. Tag is related to Size. Size is related to Amount. 
Gold --AtLocation--> Tooth <--RelatedTo--> Fill <--RelatedTo--> Car <--RelatedTo--> Porch 
Code --IsA--> Tag <--RelatedTo--> Size <--RelatedTo--> Amount 