Assertion: argon | /r/HasProperty | heavy
Facets:
value: as air
type: OTHER
Source sentences:
text: Argon is heavy enough that it tends to not be lost to space like for example Helium is lost.
text: Argon is 1.4 times as heavy as air; it’s not breathable as oxygen and can cause suffocating by setting in the lower parts on the lungs.