About: http://webisa.webdatacommons.org/21139621

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	The reason is you need to install their Silverlight software on your machine to view the site. (Silverlight is not platform-specific and it should run on your Mac or *nix box.) Once he is done, the site is a real blast from the past.
http://www.w3.org/ns/prov#wasQuotedFrom	crainium.net