PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • A former editor of Sky & Telescope magazine, Chaikin has also been a contributing editor of Popular Science and has written for Newsweek, Air&Space/Smithsonian,World Book Encyclopedia, Scientific American, and other publications.
http://www.w3.org/ns/prov#wasQuotedFrom
  • thespaceshow.com