Assertion: led's lifespan | /r/HasProperty | given estimate
Facets:
value: in hours
type: TEMPORAL
value: for leds
type: PURPOSE
value: in years
type: TEMPORAL
Source sentences:
text: For LEDs, this lifespan is given in hours or years, the latter an estimate based on three hours of daily use.
text: For LEDs, this lifespan is given in hours or years, the latter an estimate based on three hours of daily use.