About: http://webisa.webdatacommons.org/420084556

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 other words, there is arranged downstream of each light source 4 an optical element 5, for example a lens, for sufficiently collimating the emitted light.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au