About: http://webisa.webdatacommons.org/310461941

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	That sums it up for me, and here is an example from the first cento in Trace.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com