About: http://webisa.webdatacommons.org/176691287

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Correspondents include the President, Stephen Bull, Alexander Butterfield, Dwight L. Chapin, John D. Ehrlichman, Robert H. Finch, Peter Flanigan, H. R. Haldeman, William E. Timmons and other members of the White House Staff.
http://www.w3.org/ns/prov#wasQuotedFrom	nixonlibrary.gov