Assertion: hot air balloon | /r/ObjectUse | used by side
Facets:
value: for conducting aerial reconnaissance
type: PURPOSE
value: during the american civil war
type: TEMPORAL
value: for reconnaissance missions
type: PURPOSE
Source sentences:
text: During the war hot air balloons were used by both sides for reconnaissance missions.
text: Hot air balloons were used during the American Civil War by both sides for conducting aerial reconnaissance and artillery spotting missions.