About: http://webisa.webdatacommons.org/90979477

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	Perhaps you will have a set of keys e.g. in another table, and some identifier e.g. foreign key to that table? so you can tell which key was used, to encrypt a particular data element?
http://www.w3.org/ns/prov#wasQuotedFrom	jguru.com