PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • A DRM would one-time-use book would not only be attractive because publishers would earn more money, but electronic text books would be able to be sold for a fraction of the cost, cutting out book stores and creating a landslide marketshare shift by means of that huge price differential. (If that device were a tablet, the savings on books could pay for the device, and save students a lot of back pain.
http://www.w3.org/ns/prov#wasQuotedFrom
  • businessinsider.com