Assertion: tractor's engine | /r/CapableOf | use propane injection
Facets:
value: as a power boost
type: PURPOSE
value: sometimes
type: TEMPORAL
Source sentences:
text: Engines are almost always diesel, but sometimes operate on kerosene, and sometimes use propane injection as a power boost.
text: Engines are almost always diesel, but sometimes operate on kerosene, and sometimes use propane injection as a power boost.