Assertion: narwhal's tusk | /r/CapableOf | grow in male
Facets:
value: typically
type: DEGREE
value: from the upper jaw
type: LOCATION
Source sentences:
text: Narwhals are sometimes called sea unicorns because of the enormous tusk that grows from the upper jaw in males.
text: Tusks typically grow only on males, but a few females have also been observed with short tusks.