About: http://webisa.webdatacommons.org/241059182

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	Further, for even greater security, master key 30 may be rotated on a periodic basis, such as weekly or monthly, and used to re-encrypt E-key 32 and F-key 34 at authorization center 14.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com