Assertion: park's mile | /r/HasProperty | 446 km
Facets:
Source sentences:
text: Located in Arizona, Grand Canyon National Park encompasses 277 miles (446 km) of the Colorado River and adjacent uplands.
text: It is 277 miles (446 km) long, up to 18 miles (29 km) wide and more than a mile (6,000 feet / 1,800 meters) deep.