PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Oil is a particularly critical source of energy in the United States as it currently meets nearly 40 percent of U.S. energy needs, totaling 94 percent of energy use in the transportation sector.
http://www.w3.org/ns/prov#wasQuotedFrom
  • iar-gwu.org