About: http://webisa.webdatacommons.org/54137253

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	- Knowing a lot of software architects and developers i can tell you that no system of such scale as Google can be perfect (the recent glitch with blogspot could be a good example).
http://www.w3.org/ns/prov#wasQuotedFrom	google.com