you are likely to find Merchant in/at/on Business. Business is related to Deal. Deal is a synonym of Sell. Sell is related to Purchase. 
Historic is related to Ancient. Ancient is related to Civilization. 
Merchant --AtLocation--> Business <--RelatedTo--> Deal <--Synonym--> Sell <--RelatedTo--> Purchase 
Historic <--RelatedTo--> Ancient <--RelatedTo--> Civilization 