Assertion: magnesium sulfate's sulfur | /r/HasProperty | produced
Facets:
value: from petroleum
type: OTHER
value: from natural gas
type: OTHER
value: from related fossil resources
type: OTHER
Source sentences:
text: Today, sulfur is produced from petroleum, natural gas, and related fossil resources, from which it is obtained mainly as hydrogen sulfide.
text: Today, almost all elemental sulfur is produced as a byproduct of removing sulfur-containing contaminants from natural gas and petroleum.