Assertion: smog's pollutant | /r/HasProperty | ground-level ozone
Facets:
value: mainly
type: DEGREE
value: principally
type: OTHER
Source sentences:
text: A mixture of pollutants, principally ground-level ozone, produced by chemical reactions in the air involving smog-forming chemicals.
text: Smog is a mixture of many pollutants, mainly ground level ozone and fine particulate matter.
text: In the U.S., one measure of outdoor air pollution is the Air Quality Index, or AQI which rates air conditions across the country based on concentrations of five major pollutants: ground-level ozone, particle pollution (or particulate matter), carbon monoxide, sulfur dioxide, and nitrogen dioxide.
text: The two primary pollutants in smog are ground-level ozone ( O 3 ) and particulate matter ( PM ).