About: http://webisa.webdatacommons.org/199057755

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	Confirmation ??? The best practice is to confirm that the user wants to receive your message through a confirmation link (i.e. double opt-in).
http://www.w3.org/ns/prov#wasQuotedFrom	deliverability.com