id	keyword
concept-2787	ginseng
concept-2787	plant
concept-2787	bartram
concept-2787	china
concept-2787	trade
concept-2787	american
concept-2787	collinson
concept-2787	british
concept-2787	chinese
concept-2787	john
concept-2787	root
concept-2787	peter
concept-2787	world
concept-2787	empire
concept-2787	eighteenth
concept-2787	university
concept-2787	century