Assertion: gunpowder | /r/HasProperty | primary propellant
Facets:
value: during the late 19th century
type: TEMPORAL
value: in the past
type: TEMPORAL
value: before the invention of smokeless powder
type: TEMPORAL
Source sentences:
text: In the past, gunpowder was the primary propellant before the invention of smokeless powder during the late 19th century.