PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • In chronology, an era is a period reckoned from an artificially fixed point in time, as before or after the birth of Christ: BC for Before Christ and AD for Anno Domini (year of the Lord).
http://www.w3.org/ns/prov#wasQuotedFrom
  • atimes.com