Assertion: mastodon's tusk | /r/PartOf | columbian mammoth
Facets:
Source sentences:
text: The largest known mammoth tusk, 4.9 m (16 ft) long, belonged to a Columbian mammoth, and others range from 3.5 to 4.12 m (11.5 to 13.5 ft) long.
text: The largest known mammoth tusk belonged to a Columbian mammoth and is 4.9 metres (16 ft) long.