About: http://webisa.webdatacommons.org/434995223

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	For one thing, there are different types of crude oil such as light, heavy, "sweet, and "sour -- which may be in different demand, and thus priced somewhat differently at any given time.
http://www.w3.org/ns/prov#wasQuotedFrom	archives.gov