PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • It brings together more than 140 contemporary letters, diary entries, speeches, articles, messages, and poems by more than eighty participants and observers, among them Abraham Lincoln, Jefferson Davis, Ulysses S. Grant, William T. Sherman, Robert E. Lee, Frederick Douglass, Walt Whitman, Herman Melville, Mary Chesnut, Clement Vallandigham, Henry Adams, Charlotte Forten, Joshua Lawrence Chamberlai
http://www.w3.org/ns/prov#wasQuotedFrom
  • penguin.com