About: http://webisa.webdatacommons.org/55075788

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	There is no technical or legal requirement that a user be authenticated, but most email servers are configured to require authentication when sending email.
http://www.w3.org/ns/prov#wasQuotedFrom	serverfault.com