About: http://webisa.webdatacommons.org/40973161

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 addition, the rim of the projection lens, as viewed from the front, is not necessarily perfectly circular, but can be differently shaped, including rotationally asymmetric in shape.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk