About: http://webisa.webdatacommons.org/23722402

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	where K1 and K2 are secret random keys shared by sender and receiver, and Nonce is a value that changes with each generated tag.
http://www.w3.org/ns/prov#wasQuotedFrom	wikipedia.org