About: http://webisa.webdatacommons.org/210290356

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	Although not shown, this second embodiment preferably also includes a film holder and a switch or other sensor to detect presence of film in the device so as to cause the SLMs to switch to their reflected state.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com