Assertion: fuel cell | /r/CapableOf | convert fuel
Facets:
value: to energy
type: PURPOSE
value: at an efficiency
type: MANNER
value: because of this fundamental characteristic
type: CAUSE
value: like their combustion engine counterparts
type: OTHER
Source sentences:
text: Like their combustion engine counterparts, fuel cells convert fuel to energy.
text: Because of this fundamental characteristic, fuel cells may convert fuels to useful energy at an efficiency as high as 60 percent, whereas the internal-combustion engine is limited to efficiencies near 40 percent or less.