Assertion: led | /r/HasProperty | the most efficient lights
Facets:
Source sentences:
text: LEDs, the most efficient lights on the market, are starting to appear alongside incandescent and compact fluorescent bulbs in hardware and home-goods stores.
text: Some of the current LED materials systems exhibit higher luminous performance than most of the conventional light sources, and soon light emitting diodes are expected to be the most efficient emitters available.