PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Arctic mercury pollution originates almost entirely in nations as far south as the tropics, from sources such as wildfires, coal burning and gold mining.
http://www.w3.org/ns/prov#wasQuotedFrom
  • spacedaily.com