About: http://webisa.webdatacommons.org/449713096

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 do know that some certification is needed and many are indeed quite good, unfortunately most of them are a joke.
http://www.w3.org/ns/prov#wasQuotedFrom	osnews.com