Assertion: phosgene | /r/ObjectUse | used as choking pulmonaryagent
Facets:
value: during world war i
type: TEMPORAL
value: extensively
type: DEGREE
Source sentences:
text: Phosgene was used extensively during World War I as a choking (pulmonary) agent.
text: Phosgene was used during World War I as a choking (pulmonary) agent.
text: Phosgene was used during World War I as a choking (pulmonary) agent.
text: Where phosgene is found and how it is used Phosgene was used extensively during World War I as a choking (pulmonary) agent.
text: Phosgene was used during World War I as a choking (pulmonary) agent.
text: Phosgene was used during World War I as a choking (pulmonary) agent.
text: Phosgene was used extensively during World War I as a choking (pulmonary) agent.