PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The term, of necessity, refers to the continent rather than a particular country because the reality of the slave trade has denied most blacks any knowledge of their specific country of heritage, e.g., most African Americans are unable to trace their ancestry to a specific African nation in the manner that Irish-Americans or German-Americans are able to trace their respective ancestries.
http://www.w3.org/ns/prov#wasQuotedFrom
  • washingtonpost.com