About: http://webisa.webdatacommons.org/110309141

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	Through this arrangement, vertical reciprocations of the rack bar 57 function through the gear train to effect zooming of the lens 20 throughout a range including wide angle and telephoto.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com