PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The main contaminating substance is tritium, a form of hydrogen that poses very little threat to the environment due to its constant movement in water.
http://www.w3.org/ns/prov#wasQuotedFrom
  • world-nuclear-news.org