About: http://webisa.webdatacommons.org/2178150

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	Computer systems have existed for generating and maintaining databases containing documents, pages, and other items.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com