Assertion: light bulb | /r/HasProperty | lit
Facets:
value: couple decades ago
type: TEMPORAL
Source sentences:
text: This keeps the paint from evaporating while the light bulb is lit.
text: A tungsten light bulb refers generally to incandescent light bulbs, which are lights that generate light by heating a metal wire or filament with electricity until it becomes white hot and glows.
text: Just a couple decades ago, light bulbs were light bulbs.
text: Incandescent lamps (light bulbs) generate light by passing electric current through a resistive filament, thereby heating the filament to a very high temperature so that it glows and emits visible light over a broad range of wavelengths.