PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • EWS, or Exchange Web Services, is a SOAP API that provide access to emails, contacts, appointments, tasks, and other Exchange Server data types and functionality.
http://www.w3.org/ns/prov#wasQuotedFrom
  • stackoverflow.com