Assertion: zeppelin | /r/CapableOf | use the boeing 307 stratoliner
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text: By the time the two Graf Zeppelins were recycled, they were the last rigid airships in the world, and heavier-than-air long-distance passenger transport, using aircraft like the Focke-Wulf Condor and the Boeing 307 Stratoliner, was already in its ascendancy.