Assertion: smog's pollutant | /r/CapableOf | combine with primary emissions
Facets:
value: to form photochemical smog
type: PURPOSE
Source sentences:
text: These pollutants react in the atmosphere with sunlight to form secondary pollutants that also combine with the primary emissions to form photochemical smog.
text: Modern smog does not usually come from coal but from vehicular and industrial emissions that are acted on in the atmosphere by ultraviolet light from the sun to form secondary pollutants that also combine with the primary emissions to form photochemical smog.