Assertion: male narwhal | /r/CapableOf | grow tusk
Facets:
value: mostly
type: DEGREE
Source sentences:
text: For quite awhile, it was believed only male narwhals grew tusks.
text: Though mostly male narwhals grow tusks, around 15% of females also develop them.
text: All male narwhals grow tusks, but sometimes the females do too.