Assertion: mastodon | /r/HasProperty | animal
Facets:
Source sentences:
text: Adding to this amazing discovery is a relatively large rock which has, on its surface a depiction of a mastodon, an animal that became extinct around 8000 BC.
text: Green explained that understanding how mastodons’ diet changed through time across its natural habitat in North America may lead to a better understanding of what caused the mastodon, an animal that was so common in our region only 10,000 years ago, to go extinct.