Assertion: natural gas | /r/HasProperty | combustible
Facets:
Source sentences:
text: Quite uninteresting - except that natural gas is combustible, abundant in the United States and when burned it gives off a great deal of energy and few emissions.
text: Like all other fossil fuels, natural gas is also not a renewable energy source; Natural gas, which is a combustible material, is required to be handled carefully; While natural gas burns much cleaner than other fossil fuels, it also contributes to greenhouse gases, particularly methane, the main component of natural gas;