Assertion: engine's piston | /r/CapableOf | perform work
Facets:
value: on the charge
type: LOCATION
value: on it
type: LOCATION
Source sentences:
text: With both intake and exhaust closed the piston continues moving upwards compressing the charge and performing a work on it.
text: The piston performs work on the charge as it is being compressed; as a result its pressure, temperature and density increase; an approximation to this behavior is provided by the ideal gas law.