Assertion: tear gas's use | /r/CapableOf | escalate to lethal gases
Facets:
value: after 1914
type: TEMPORAL
value: during the war
type: TEMPORAL
Source sentences:
text: Use of chemical weapons escalated during the war to lethal gases, after 1914 (during which only tear gas was used).
text: Use of chemical weapons escalated during the war to lethal gases, after 1914 (during which only tear gas was used).