Assertion: nitrogen | /r/HasProperty | a component of air
Facets:
Source sentences:
text: One advantage of the liquid nitrogen vehicle is that the exhaust gas is simply nitrogen, a component of air, and thus it produces no localized air pollution in the tailpipe emissions.
text: Although nitrogen is a component of air, it is not in usable form; that’s why bacteria need to convert the atmospheric nitrogen into compounds that living beings can use, and this process is the nitrogen cycle.