Quarter is related to Side. Side is related to Box. Box is related to Post. 
Like is related to River. River is related to Thin. Thin is related to Card. Card is related to Thick. 
Quarter <--RelatedTo--> Side <--RelatedTo--> Box <--RelatedTo--> Post 
Like <--RelatedTo--> River <--RelatedTo--> Thin <--RelatedTo--> Card <--RelatedTo--> Thick 