About: http://webisa.webdatacommons.org/37189183

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	As far as I know there is no such things as auto-delete anywhere in the SMTP or another mail related standard.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com