About: http://webisa.webdatacommons.org/12087120

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	In this case, message type refers to the type of message such as e-mail messages, appointments, meeting requests, and voice mail.
http://www.w3.org/ns/prov#wasQuotedFrom	microsoft.com