About: http://webisa.webdatacommons.org/58457320

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	Furthermore, system 12 can also include a mechanism such as a tilting mirror or displacement means to change the angle and/or position of emitted light so as to accommodate viewers at different positions or heights.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk