Assertion: phosgene's effect | /r/HasProperty | death
Facets:
Source sentences:
text: Phosgene gas was used at Passchendaele and had deadly effects, even death.
text: In his studies of the effects of poison gas, Haber noted that exposure to a low concentration of a poisonous gas for a long time often had the same effect (death) as exposure to a high concentration for a short time.