Assertion: tear gas | /r/IsA | chemical weapon
Facets:
value: in 1993
type: TEMPORAL
Source sentences:
text: The meme -- posted by the group OurTime.org, an advocacy group for young Americans -- said, "Tear gas has been classified as a chemical weapon and banned in international conflict since 1993.
text: CS or tear gas is classified as a chemical weapon and its use has been banned in warfare since 1993.
text: In 1993, tear gas was classified as a chemical weapon and in 1997 it was banned from use in international warfare.
text: The meme — posted by the group OurTime.org, an advocacy group for young Americans — said, "Tear gas has been classified as a chemical weapon and banned in international conflict since 1993.