About: http://webisa.webdatacommons.org/432392083

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	If the camera 210 is an electronic camera, including a CCD camera or other such electronic device, another way of achieving an alternating obstruction is to use an electronic shutter.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com