Assertion: nitrogen dioxide's gas | /r/HasProperty | argon
Facets:
value: mostly
type: DEGREE
Source sentences:
text: The remaining 1 percent is a mixture of other gases, mostly argon (0.9 percent), along with trace (very small) amounts of carbon dioxide, methane, hydrogen, helium, and more.
text: The principal gases provided are nitrogen, oxygen, carbon dioxide, argon, hydrogen, helium and acetylene, although many other gases and mixtures are also available in gas cylinders.
text: industrial gases”  is sometimes narrowly defined as just the major gases sold, which are: nitrogen, oxygen, carbon dioxide, argon, hydrogen, acetylene and helium.
text: The four main gases in the atmosphere are nitrogen, oxygen, argon and carbon dioxide.