Heavy is related to Great. Great is related to Literature. Literature can be used for Intelligent. 
Pile is related to File. File is related to Case. Case is related to Road. Road is related to City. 
Heavy <--RelatedTo--> Great <--RelatedTo--> Literature --UsedFor--> Intelligent 
Pile <--RelatedTo--> File <--RelatedTo--> Case <--RelatedTo--> Road <--RelatedTo--> City 