About: http://webisa.webdatacommons.org/453529899

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	But it turns out that in most cameras there already is a device that can be used to generate pulses of light -- their built-in flash.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com