PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Industry monitors estimate Chinese companies like the China National Offshore Oil Co. and Sinopec have spent about $100 billion since the start of 2009 on oil and gas assets in Africa, the Middle East and other producing zones, including the United States, to boost imports as domestic fields are depleted.
http://www.w3.org/ns/prov#wasQuotedFrom
  • energy-daily.com