PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Equally worrisome is the country???s role as a producer of chemical precursors, the substances used to extract and refine drugs such as cocaine, morphine, and heroine.
http://www.w3.org/ns/prov#wasQuotedFrom
  • foreignpolicy.com