About: http://webisa.webdatacommons.org/152205065

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	It came out in 2006 and while v1 was somewhat limited, v2 (Oct 2009) added huge improvements, including performance.
http://www.w3.org/ns/prov#wasQuotedFrom	geekswithblogs.net