About: http://webisa.webdatacommons.org/9268349

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	An example of such a system is a document collaboration system where users may subscribe to receive specific types of documents of their choosing.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com