PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Although many people are more familiar with the styles of the 20th century, it would be nice to see this time period covered in depth as well - at least up to the 1950s or so.Overall, this book is a good start, but do not expect to be able to use just this book to date and identify all of your photos.
http://www.w3.org/ns/prov#wasQuotedFrom
  • amazon.com