Assertion: black powder | /r/HasProperty | sealed
Facets:
Source sentences:
text: By contrast, black powder made with sodium nitrate must be kept sealed to remain stable.
text: By contrast, black powder made with sodium nitrate must be kept sealed to remain stable.
text: By contrast, black powder made with sodium nitrate must be kept sealed to remain stable.
text: By contrast, black powder made with sodium nitrate must be kept sealed to remain stable.
text: By contrast, black powder made with sodium nitrate must be kept sealed to remain stable.