About: http://webisa.webdatacommons.org/448385495

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	Typically, a light source, such as a near point source halogen, discharge or sulfur lamp placed in front of a sharply-focusing reflector, is attached to one end of a light guide.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk