Assertion: crude oil | /r/HasProperty | produced
Facets:
value: from inorganic material
type: OTHER
value: from oil shale
type: LOCATION
Source sentences:
text: Since production started in 1971, oil and gas have been produced from a total of 112 fields on the Norwegian shelf.
text: Synthetic crude oil is produced from oil shale
text: Ongoing heat could produce gas, though if the temperature exceeded 500°F, the organic matter was destroyed and neither oil nor gas was produced.
text: The production stage is the most important stage of a well's life; when the oil and gas are produced.
text: It is also true that oil can be produced from inorganic material, lending support to this theory.