About: http://webisa.webdatacommons.org/259196269

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	Referring to FIG. 43, reference numeral 55 represents a light source such as a light emitting diode that emits infrared rays which cannot be sensed by the photographer.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com