Assertion: acre's area | /r/ObjectUse | used at the battle of gettysburg
Facets:
value: during the american civil war
type: TEMPORAL
Source sentences:
text: Around five million cubic feet (140,000 m3) of soil and rocks had to be transported out of the park, and more gunpowder was used to clear the area than was used at the Battle of Gettysburg during the American Civil War.