Assertion: tear gas | /r/ObjectUse | used in world war i
Facets:
value: for chemical warfare
type: PURPOSE
value: according to encyclopaedia britannica
type: OTHER
Source sentences:
text: Tear gas was first used in World War I in chemical warfare, but since its effects are short-lasting and rarely disabling, it came into use by law-enforcement agencies as a means of dispersing mobs, disabling rioters, and flushing out armed suspects without the use of deadly force.
text: According to Encyclopaedia Britannica, tear gas was first used in World War I for chemical warfare, but because its effects were short-lasting, domestic law enforcement authorities began to use it to disperse mobs and rioters.