About: http://webisa.webdatacommons.org/456346258

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	In a scheme such as this, it is impossible for data to flow in the opposite direction, so that, for example, Stage C cannot pass data to Stage A. This restriction is often perfectly acceptable.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es