Assertion: sulfur | /r/HasProperty | extracted
Facets:
value: from natural gas
type: OTHER
value: from oil
type: OTHER
value: from petroleum
type: OTHER
value: from pyrite
type: OTHER
Source sentences:
text: By the 3rd century, the Chinese discovered that sulfur could be extracted from pyrite.
text: Sulfur is extracted from petroleum and natural gas.
text: In the Frasch process, superheated water is pumped into the sulfur deposit; the sulfur melts and is extracted.
text: Sulfur is extracted from oil and natural gas.