PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Agadez is a surprisingly large town, with perhaps 25,000 people. (Population estimates vary substantially ?? there hasn??t been a recent census.) It first developed in about the fifteenth century and soon became a major crossroads and market center for the extensive trans-Sahara camel caravan trade in slaves, salt and other commodities.
http://www.w3.org/ns/prov#wasQuotedFrom
  • unc.edu