About: http://webisa.webdatacommons.org/91223372

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	In the case where the image information is an electrical signal, two or more monochromatic lights such as a light emission diode or a laser can be used in combination as a light source.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au