Assertion: balloon | /r/CapableOf | make their debut
Facets:
value: in 1927
type: TEMPORAL
value: after the first annual parade
type: TEMPORAL
Source sentences:
text: Three years after the first annual parade, balloons made their debut.
text: The balloons—which used to be filled with only air—made their debut in 1927; Felix the Cat was the first character balloon.