About: http://webisa.webdatacommons.org/243175293

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 this regard the null node establishes no document potential (other than the ???null??? potential vio (r,n) (of equation 8), but is useful as an anchor in nets, i.e., a null node has no text or other properties.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr