Assertion: natural gas | /r/HasProperty | billed as cleaner-burning alternative
Facets:
value: often
type: TEMPORAL
value: to other forms of fossil fuels
type: OTHER
Source sentences:
text: Fox also pointed out that while natural gas is often billed as a cleaner-burning alternative to other forms of fossil fuels, some studies have found that it is actually worse for the environment overall because of the unintended consequences of the extraction process, fracking