About: http://webisa.webdatacommons.org/324408286

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 FIG. 9, NULL pointer indicates that the use method is not allowed in the software, and a pointer other than the NULL pointer indicates that the use method is allowed.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com