About: http://webisa.webdatacommons.org/246346549

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	This method is particularly effective in the case of a small deflection angle, so the overlapping state between the projected light spot 50 and the unnecessary light spot 51 is avoidable on the projection screen 17.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com