About: http://webisa.webdatacommons.org/135033193

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	The reason for this requirement is that all event logs, including security, must be searched to determine whether the event source is unique.
http://www.w3.org/ns/prov#wasQuotedFrom	codeproject.com