Assertion: nitrogen | /r/HasProperty | toxic
Facets:
value: under normal conditions
type: TEMPORAL
Source sentences:
text: Although nitrogen is non-toxic, when released into an enclosed space it can displace oxygen, and therefore presents an asphyxiation hazard.
text: So, although the nitrogen is non-toxic, this is cold enough to cause instantaneous frostbite.
text: Nitrogen is non-toxic under normal conditions.