Assertion: zeppelin's airship | /r/CapableOf | operate in regular passenger transport
Facets:
value: profitably
type: MANNER
Source sentences:
text: Today, with large, fast, and more cost-efficient fixed-wing aircraft and helicopters, it is unknown whether huge airships can operate profitably in regular passenger transport though, as energy costs rise, attention is once again returning to these lighter-than-air vessels as a possible alternative.