Assertion: male narwhal | /r/CapableOf | weigh up to 1,600 kilograms
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Source sentences:
text: Male narwhals weigh up to 1,600 kilograms (3,500 lb), and the females weigh around 1,000 kilograms (2,200 lb).
text: Male narwhals can grow to be about 4 – 9 m long and weigh up to 1,600 kilograms.