About: http://webisa.webdatacommons.org/441010064

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	They handle logging, groups, users, session management, CAPTCHAs, and search around an object (and everything is an object).
http://www.w3.org/ns/prov#wasQuotedFrom	oreilly.com