About: http://webisa.webdatacommons.org/299210438

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	I???ve found what I think is the most useful solution in the form of ShareThis, a WordPress plugin developed by Alex King that adds this unobtrusive little graphic and link at the foot of each blog post:
http://www.w3.org/ns/prov#wasQuotedFrom	nevillehobson.com