Assertion: narwhal | /r/CapableOf | weigh between 0.8 and 1.6 tonnes
Facets:
Source sentences:
text: Narwhals are between 4 and 5 m (13 - 16.5 ft) in length and they weigh between 0.8 and 1.6 tonnes (0.75 - 1.6 tons).