Assertion: narwhal | /r/CapableOf | grow tusk
Facets:
Source sentences:
text: Narwhals, like walruses and elephants, grow tusks.
text: Very rarely, a female will grow a tusk, or a narwhal will grow two tusks.
text: Narwhals, the mysterious unicorns of the sea, live in the Arctic Ocean and grow to about 18' (not including the tusk).
text: Narwhals, like walruses and elephants, grow tusks, which are actually modified teeth.
text: Some narwhals grow two tusks, but the right one usually extends asymmetrically to the left one.