PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The process was invented by Dr Irving Langmuir in 1926 and was used extensively before WW2, particularly in Germany.
http://www.w3.org/ns/prov#wasQuotedFrom
  • specialwelds.com