Assertion: porcupine | /r/CapableOf | flow for 448 mi
Facets:
value: in a great arc
type: TEMPORAL
Source sentences:
text: , U.S. Discovered in 1842 by John Bell of the Hudson’s Bay Company, the Porcupine rises in the Mackenzie Mountains of west central Yukon and flows for 448 mi (721 km) in a great arc, first north and then west across the international boundary and into the Yukon River near Fort Yukon, Alaska.