Assertion: white oak | /r/AtLocation | southwestern united states
Facets:
value: on the slopes of canyon walls
type: LOCATION
Source sentences:
text: The Arizona white oak (Q. arizonica), which is about 18 m (60 feet) tall, is found in the southwestern United States on the slopes of canyon walls, at altitudes from 1,500 to 3,000 m (5,000–10,000 feet).