About: http://webisa.webdatacommons.org/149264239

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	On March 10 and 11, the United States Copyright Office held roundtables on mass digitization and orphan works???books, photographs, works of art, and other intellectual property for which the rights holder cannot be found.
http://www.w3.org/ns/prov#wasQuotedFrom	historians.org