Assertion: wild yak | /r/HasProperty | tamed by ancient qiang people
Facets:
value: in the changtang
type: LOCATION
Source sentences:
text: The present domestic yak is descended from wild yak, which may have been caught and tamed by ancient Qiang people in the Changtang (a Tibetan term meaning "the empty highland of the north"), an area that covers more than half of Tibet.