About: http://webisa.webdatacommons.org/277210708

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	Unless you have a strong need for it, I suggest you simply block outbound requests to port 25 from all systems except your mail server.
http://www.w3.org/ns/prov#wasQuotedFrom	serverfault.com