About: http://webisa.webdatacommons.org/78983586

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	FIG. 4 is a graph similar to FIG. 3 except showing variance of luminance for vertical viewing angles.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr