Congress is related to Representative. Representative is related to Republic. Republic is related to Retail. Retail is related to Business. 
Cart is a synonym of Basket. Basket is related to Doll. 
Congress <--RelatedTo--> Representative <--RelatedTo--> Republic <--RelatedTo--> Retail <--RelatedTo--> Business 
Cart <--Synonym--> Basket <--RelatedTo--> Doll 