About: http://webisa.webdatacommons.org/409328974

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	When the normal vector N, light vector L and other vectors are used in such a manner, the vertex brightness information (brightness magnification) can be determined.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com