About: http://webisa.webdatacommons.org/295665808

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	Basically I would suggest you look at a email sent to you (or someone) from an established company and note what information it contains, and particularly the header and footer details.
http://www.w3.org/ns/prov#wasQuotedFrom	webdeveloper.com