Assertion: woolly mammoth's extinction | /r/CapableOf | coincide in north america
Facets:
value: with the immigration of humans
type: OTHER
Source sentences:
text: Especially in North America, the extinction of about two-thirds of the megafauna species coincides with the immigration of humans, who apparently crossed a land bridge that connected Siberia and Alaska, and made their way south throughout both American continents.