| http://www.w3.org/ns/prov#value | - furous smog) ??? ??? ??? sulfurous smog smog dominated by sulfur dioxide and sulfate compounds (also called Los Angeles-type smog) ??? ??? ??? London-type smog (grey smog) type of photochemical smog which is dominated by particulate matter ??? ??? ??? secondary pollutants a primary pollutant that has undergone transformation in the presence of sunlight, water, oxygen, or other compounds ??? ??? ??
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