Assertion: sperm whale's number | /r/CapableOf | vary in the narwhal
Facets:
value: from 1
type: OTHER
Source sentences:
text: Some odontocetes have only vestigial teeth buried in their jawbones; others have teeth that are erupted, in numbers varying from 1 in the narwhal to more than 240 in the franciscana, or La Plata river dolphin.