Assertion: european gun | /r/CapableOf | weigh about 20 to 40 lbs
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Source sentences:
text: Whereas most European guns before 1370 weighed about 20 to 40 lbs (9–14 kg), the French siege of Château de Saint-Sauveur-le-Vicomte in 1375 during the Hundred Years War saw the use of guns weighing over a ton (900 kg), firing stone balls weighing over 100 lbs (45 kg).