About: http://webisa.webdatacommons.org/455303486

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	A means is provided for blocking the light image from the sensing means except during a pulse from the light-directing means.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com