Assertion: natural gas's use | /r/HasProperty | fossil fuel
Facets:
Source sentences:
text: The first use of the term "fossil fuel" occurs in the work of the German chemist Caspar Neumann, in English translation in 1759.
text: The first use of the term "fossil fuel" occurs in the work of the German chemist Caspar Neumann, in English translation in 1759.