PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Several years ago, a high school tried to do away with textbooks except in math and science labs, asking teachers to use outside sources and lectures--in most cases the history teachers were unable to do this because they didn't know enough history.
http://www.w3.org/ns/prov#wasQuotedFrom
  • washingtonpost.com