Assertion: mastodon | /r/SimilarTo | ancient elephants
Facets:
value: https://www.livescience.com/56708-mastodon-facts.html) livescience ,
type: OTHER
Source sentences:
text: Mastodons and woolly mammoths both look like ancient elephants, but they are separate species.
text: (https://www.livescience.com/56708-mastodon-facts.html) LiveScience , both mastodons and woolly mammoths look like ancient elephants, however, they are not the same species (the 21st century elephants are closely related to mammoths compared to mastodons ).