About: http://webisa.webdatacommons.org/362118581

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	The spotlight source direction vector S, although associated with the light vector L, is a per light-source vector (i.e., constant for a given light source).
http://www.w3.org/ns/prov#wasQuotedFrom	google.es