About: http://webisa.webdatacommons.org/128092354

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	Arc discharge lamps, and in particular metal halide lamps, are frequently employed in commercial usage because of their high luminous efficacy and long life.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com