PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Hansen exploited some of the Varians' work to develop the klystron and during the years 1937 to 1940, along with collaborators such as John R. Woodyard, founded the field of microwave electronics.[2]
http://www.w3.org/ns/prov#wasQuotedFrom
  • wikipedia.org