PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • NITRATES are the most ubiquitous water pollutants in the Western world, according to Mark Huxham (Forum, 23 January, p 47).
http://www.w3.org/ns/prov#wasQuotedFrom
  • newscientist.com