PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • So, disabling all add-ins is a useful step and should be the first step for Outlook troubleshooting.
http://www.w3.org/ns/prov#wasQuotedFrom
  • technet.com