Assertion: damper | /r/CapableOf | prevent the spread of fire
Facets:
value: through ventilation
type: MANNER
value: through heating
type: MANNER
value: through ac ducts
type: TRANSITIVE-OBJECT
Source sentences:
text: The dampers prevent the spread of fire through heating, ventilation, and AC ducts, which helps to stop a fire from spreading throughout the rest of the home.