Assertion: natural gas | /r/HasProperty | hydrocarbon
Facets:
Source sentences:
text: Bituminous coal, natural gas and oil are hydrocarbons, which are combinations chiefly of hydrogen and carbon.
text: Natural gas is a colorless gaseous fossil fuel consisting of mostly methane and ethane—composed of hydrogen and carbon—and is also known as hydrocarbon.
text: Bituminous coal, natural gas and oil are hydrocarbons, which are combinations chiefly of hydrogen and carbon.