About: http://webisa.webdatacommons.org/31378948

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	Even if you sent your message yesterday you can not really know anything except whether your mail server accepted and forwarded the message on to the next server in line.
http://www.w3.org/ns/prov#wasQuotedFrom	superuser.com