About: http://webisa.webdatacommons.org/438068668

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	Alternately, a single light source with bifurcated and/or compound emitting directions can be used and/or an optical element such as a lens with bifurcated and/or compound facets can be used.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es