Assertion: arctic tundra | /r/CapableOf | begin at about 4,000 feet
Facets:
value: above sea level
type: LOCATION
value: in northern latitudes
type: LOCATION
value: close to the arctic circle
type: LOCATION
Source sentences:
text: In northern latitudes, close to the Arctic Circle, arctic tundra may begin at about 4,000 feet (1,200 meters) above sea level.