About: http://webisa.webdatacommons.org/134662467

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	JAAS groups multiple Principal objects, representing the same user, into a single Subject, which also holds the user's credentials, such as password, certificate, or any kind of user-related information.
http://www.w3.org/ns/prov#wasQuotedFrom	oreilly.com