Assertion: narwhal's tusk | /r/CapableOf | attract mate
Facets:
value: like an elk's elaborate antlers
type: MANNER
value: like a peacock's ostentatious feathers
type: OTHER
Source sentences:
text: Now a new study suggests the true evolutionary purpose of these horns -- which can be 8-feet-long -- has to do with sex: The tusks, the research found, are used by male narwhals to compete for and attract mates, a bit like a peacock's ostentatious feathers or an elk's elaborate antlers.