Assertion: projector's lamp life | /r/HasProperty | 20,000 hours
Facets:
value: often
type: TEMPORAL
Source sentences:
text: | Lamp life: 20,000 hours
text: The lamp life or laser life is 20,000 hours and a contrast ratio of 150,000:1 which guarantees the best color display.
text: Long lamp life, often 20,000 hours