Assertion: balloon's flight | /r/AtLocation | 21 november
Facets:
value: a few weeks later
type: TEMPORAL
Source sentences:
text: The first untethered, free flight with human passengers was on 21 November 1783.
text: The first free flight, without being attached to the ground, was a few weeks later, on 21 November 1783.
text: The first free flight, without being attached to the ground, was a few weeks later, on 21 November 1783.