Assertion: narwhal | /r/CapableOf | grow to be about 16 feet
Facets:
Source sentences:
text: Narwhals can grow to be about 16 feet (4.9 m) long (not counting the tooth), and weigh about 1.8 tons (1.6 tonnes).
text: Anatomy: Narwhals can grow to be about 16 feet (4.5 m) long (not counting the tooth), and weigh about 1.8 tons (1.6 tonnes).