About: http://webisa.webdatacommons.org/294026862

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	Err - no.Look at the URL, there is a clue why you are spectacularly wrong.Current LEDs (blue ones, which white is based on) exceed 50% quantum efficiency.http://www.digikey.com/product... - for example - does 48% electricity to light.
http://www.w3.org/ns/prov#wasQuotedFrom	slashdot.org