About: http://webisa.webdatacommons.org/29993158

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 am sure they have the problem covered - but such systems are not quite as simple as they may appear sometimes.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com.au