PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • a message reader operable to monitor an information distribution service and input therefrom a message generated from a first source, the message being sent from a sender to a recipient, the message including electronic content and metadata describing the electronic content, the electronic content including one or more discussion objects generated with the message;
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com