About: http://webisa.webdatacommons.org/156976448

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	Among the sources included are books, periodicals, newspapers, pamphlets, scientific publications, broadsides, letters, journals, legal documents, ledgers and other financial records, maps, physical artifacts, and pictorial images.
http://www.w3.org/ns/prov#wasQuotedFrom	washington.edu