Assertion: crude oil | /r/HasProperty | broad term
Facets:
Source sentences:
text: Petroleum is a broad term that groups together a combination of organic liquids and gases that is formed after kerogen is heated and compressed over long periods of time.
text: Petroleum is a broad category that includes both crude oil and petroleum products.
text: Petroleum is a broad term used today to describe a combination of organic liquids and gases consisting of natural gas (mostly methane) and crude oil that is extracted from underground reservoirs.