About: http://webisa.webdatacommons.org/425010649

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	Traditionally, copyrighted content was instantiated into a book or other medium and that medium was sold.
http://www.w3.org/ns/prov#wasQuotedFrom	mit.edu