About: http://webisa.webdatacommons.org/110702148

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	Though the feature is not slated to appear officially until Firefox 6, the newly improved builds should work on older Linux platforms as well, including Red Hat and CentOS 5, Hommey noted.
http://www.w3.org/ns/prov#wasQuotedFrom	pcworld.com