About: http://webisa.webdatacommons.org/107438734

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	Documents such as emails can be digitally signed by use of public key cryptography when a user encrypts a signature for an email using his private key.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com