An (air pollution problem) can be in a country.Logical formLearned from3 sentences. A (pollution problem) can be in a world-city.Logical formLearned from3 sentences. Pollution can be from (power generation).Logical formLearned from3 sentences. (Pollution controls) may be needed.Logical formLearned from3 sentences. Areas may include (pollution prevention).Logical formLearned from3 sentences. An effect can be constituted-of-or-filled-with (air pollution).Logical formLearned from3 sentences. A town can be with pollution.Logical formLearned from3 sentences. A (pollution control technology) can be advanced.Logical formLearned from3 sentences. (Air pollution control permits) can be comprehensive.Logical formLearned from3 sentences. An (air pollution problem) can be regional.Logical formLearned from3 sentences. (Pollution case studies) can be in a country.Logical formLearned from3 sentences. A culprit can be (air pollution).Logical formLearned from3 sentences. A jump can be in (air pollution).Logical formLearned from3 sentences. Respiratory diseases may be caused by pollution.Logical formLearned from3 sentences. (Air pollution) may undergo reductions.Logical formLearned from3 sentences.