PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The most important features for me are that I can tag pictures (and it actually touches the IPTC metadata so it is portable over different file-systems if you have both Windows and Mac) and find them very easily using Windows search or the search functionality built into almost any image organization software.
http://www.w3.org/ns/prov#wasQuotedFrom
  • stackexchange.com