About: http://webisa.webdatacommons.org/17256944

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	it is quite flexible and well-structured...http://twistedmatrix.com/projects/core/documentation/howto/pb-usage.html#auto3...though the learning curve is a little steep.
http://www.w3.org/ns/prov#wasQuotedFrom	artima.com