Buy is related to Obtain. Obtain is a synonym of Acquire. 
Branch is related to Franchise. Franchise is related to Restaurant. Restaurant can be used for Drinking. Drinking is related to Coffee. 
Buy <--RelatedTo--> Obtain <--Synonym--> Acquire 
Branch <--RelatedTo--> Franchise <--RelatedTo--> Restaurant --UsedFor--> Drinking <--RelatedTo--> Coffee 