About: http://webisa.webdatacommons.org/204040748

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	The optical source may be a lamp, such as a halogen lamp, a mercury lamp, a xenon lamp, a tungsten lamp, or other lamp used in fluorescent spectrographs.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com