PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • A ???challenge,??? so we???re clear, is defined by the ALA as a ???formal, written complaint filed with a library or school requesting that a book or other material be restricted or removed because of its content or appropriateness,??? and there were a full 326 of them in 2011.
http://www.w3.org/ns/prov#wasQuotedFrom
  • flavorwire.com