PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Pretty much all electronic devices require minerals such as gold, tantalum, tin, or tungsten and not all of them are conflict-free.
http://www.w3.org/ns/prov#wasQuotedFrom
  • memeburn.com