About: http://webisa.webdatacommons.org/415450751

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	For operators such as expressions, data generators, splitters, and constants, you can open the Expression Builder from the Property Inspector of the operator attribute.
http://www.w3.org/ns/prov#wasQuotedFrom	oracle.com