About: http://webisa.webdatacommons.org/217707295

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 it is well known in the art of providing e-mail systems, and attachment is a file, document, image or other datum that accompanies a given e-mail message.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com