About: http://webisa.webdatacommons.org/427768302

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	Light, low-sulphur (???sweet???) crudes, such as WTI or Brent, are becoming rare and the global oil market is shifting to the sour, heavier Russian and Middle Eastern grades.
http://www.w3.org/ns/prov#wasQuotedFrom	resilience.org