About: http://webisa.webdatacommons.org/211997676

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	The focal length of lens 43 and lens 47 are selected so that a camera such as a 35 mm camera which may be mounted directly at port 23 by means of a retaining screw 53- receives a par focal image.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es