PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Slavery is a form of forced labor in which people are considered to be, or treated as, the property of others.
http://www.w3.org/ns/prov#wasQuotedFrom
  • dailykos.com