Assertion: polecat's fur | /r/HasProperty | valued item
Facets:
value: highly
type: DEGREE
value: since the early middle ages
type: TEMPORAL
value: in the fur trade
type: LOCATION
Source sentences:
text: Sable fur has been a highly valued item in the fur trade since the early Middle Ages, and is generally considered to have the most beautiful and richly tinted pelt among martens.