Assertion: pollution's source | /r/HasProperty | incomplete combustion of fuel
Facets:
value: in airplanes
type: LOCATION
value: in trucks
type: LOCATION
value: in cars
type: LOCATION
value: in railroad trains
type: LOCATION
value: in other forms of transportation
type: OTHER
Source sentences:
text: A second major source of pollutants is the incomplete combustion of fuel in cars, trucks, railroad trains, airplanes, and other forms of transportation.