Assertion: sperm whale's male | /r/CapableOf | average 21 meters
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Source sentences:
text: Pygmy blue whales average 19.2 meters (63 feet) at sexual maturity, with males averaging 21 meters and females 22 meters (69 and 72 feet) when fully grown, averaging 76 and 90 tonnes (83.5 and 99 tons).