About: http://webisa.webdatacommons.org/198912879

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	Components of security policy include at least the set of acceptable types of security token, the set of acceptable cryptographic algorithms, (optionally) what key to use for encryption, and the payload nodes to be protected.
http://www.w3.org/ns/prov#wasQuotedFrom	coverpages.org