Assertion: zeppelin's design | /r/CapableOf | use spinning rotor
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Source sentences:
text: Zeppelins are flying contraptions created by the goblins, using a lighter-than-air design, with their machines employing bags filled with gas to make them buoyant in the air, compared to heavier-than-air designs, which employ wing surfaces and movement to produce lift, either using a fixed wing, or a spinning rotor.