Assertion: propane | /r/HasProperty | approved clean fuel
Facets:
Source sentences:
text: Propane is an approved clean fuel listed in the 1990 Clean Air Act and the Energy Policy Act of 1992.
text: Additionally, propane is an approved clean fuel listed in the 1990 Clean Air Act.
text: Propane is an approved clean fuel listed in the 1990 Clean Air Act.