About: http://webisa.webdatacommons.org/270217766

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 front of the screen (3) an optical element with reflecting surface, i.e. a mirror or a prism is situated.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com