About: http://webisa.webdatacommons.org/30491091

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	Your best bet is to look at the answers to this question on IT Security Stack Exchange as David's answer says it all.
http://www.w3.org/ns/prov#wasQuotedFrom	serverfault.com