Assertion: poacher's horn | /r/CapableOf | weigh 4.0 kilograms
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Source sentences:
text: Horns of the African rhino weigh on average 1.5-3.0 kilograms (3.3-6.6 pounds), with white rhino having the heaviest front horn which on average weighs 4.0 kilograms (8.8 pounds).