Assertion: mammoth's tusk | /r/CapableOf | protrude like tombstone
Facets:
value: in some areas
type: LOCATION
value: from the frozen tundra
type: LOCATION
Source sentences:
text: In some areas the tusks of the mammoths protruded (like tombstones) so profusely from the frozen tundra that it generated trade in fossil ivory for centuries, extending all the way to China.