Assertion: balloon | /r/CapableOf | descend under the influence of marsgravity
Facets:
value: at that point
type: TEMPORAL
Source sentences:
text: At that point, at about the elevation of the top of Mount Olympus, the balloon would descend under the influence of Mars' gravity, but buoyancy would begin to take effect, so that at the surface of Mars, buoyancy would be fully in effect, and the balloon would hover just above the surface.