Assertion: pollution's source | /r/HasProperty | the automobile
Facets:
value: principally
type: OTHER
Source sentences:
text: Mobile sources pose special pollution control problems, and one such source, the automobile, has received particular attention in air pollution control.
text: The greatest sources of CO to outdoor air are cars, trucks and other vehicles or machinery that burn fossil fuels.
text: Ozone is produced by natural and artificial sources (vehicles, refineries, plants, etc.).
text: The main sources of air pollution are automobile,electric power plant,etc.
text: The greatest sources of CO to outdoor air are cars, trucks and other vehicles or machinery that burn fossil fuels.
text: While major stationary sources are often identified with air pollution, the greatest source of emissions are actually mobile sources, principally the automobile.