Assertion: oxygen | /r/HasProperty | nontoxic
Facets:
value: essentially
type: DEGREE
value: generally
type: DEGREE
Source sentences:
text: Normally air contains 21% oxygen and oxygen is essentially nontoxic.
text: Normally air contains 21% oxygen and oxygen is essentially nontoxic.
text: Oxygen is generally nontoxic, but oxygen toxicity has been reported when it is used in high concentrations.