About: http://webisa.webdatacommons.org/47911812

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	Oil production is constrained by economic conditions (in an economic downturn, demand for oil falls off), as well as by political events such as war and revolutions.
http://www.w3.org/ns/prov#wasQuotedFrom	monthlyreview.org