Assertion: formaldehyde | /r/HasProperty | emitted into the air
Facets:
value: as an invisible gas
type: MANNER
Source sentences:
text: Formaldehyde is a colorless, strong-smelling gas that is emitted into the air.
text: Although formaldehyde is emitted into the air as an invisible gas, it can be measured in terms of parts per million or grams per liter.