Assertion: obsidian's energy | /r/CapableOf | power a 60-watt light bulb
Facets:
value: for almost 4 years
type: TEMPORAL
Source sentences:
text: Also, recycling a single steel saves enough energy to power a 60-watt light bulb for almost 4 years.
text: Recycling a single steel can saves enough energy to power a 60-watt light bulb for almost 4 years.