Assertion: park's mile | /r/HasProperty | 29 km
Facets:
Source sentences:
text: The park is home to much of the immense Grand Canyon; a mile (1.6 km) deep, and up to 18 miles (29 km) wide.
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.