About: http://webisa.webdatacommons.org/74831985

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	attachments and sender reputation, as well as unstructured content in the message body, to block phishing and spear phishing attacks, spam and other forms of malicious or objectionable content.
http://www.w3.org/ns/prov#wasQuotedFrom	sec.gov