Assertion: gas balloon | /r/HasAspect | greater lift
Facets:
value: for a given volume
type: OTHER
Source sentences:
text: Gas balloons have greater lift for a given volume, so they do not need to be so large, and they can stay up for much longer than hot air balloons.
text: Gas balloons have greater lift for a given volume, so they do not need to be so large, and they can also stay up for much longer than hot air, so gas balloons dominated ballooning for the next 200 years.