Rent is related to Sell. Sell is related to Action. Action is related to Stumble. 
Motor is related to Oil. Oil is related to Commodity. Commodity is related to Gold. 
Rent <--RelatedTo--> Sell <--RelatedTo--> Action <--RelatedTo--> Stumble 
Motor <--RelatedTo--> Oil <--RelatedTo--> Commodity <--RelatedTo--> Gold 