An (air pollution) may pertain-to a capital.Logical formLearned from26 sentences. A world-city may report (air pollution).Logical formLearned from25 sentences. Pollution can be in a city.Logical formLearned from25 sentences. Pollution can be in a troposphere.Logical formLearned from25 sentences. Environmental pollution may undergo a prevention.Logical formLearned from25 sentences. Pollution may undergo an assessment.Logical formLearned from25 sentences. (Air pollution levels) can be high.Logical formLearned from25 sentences. A contribution can be to pollution.Logical formLearned from25 sentences. (Pollution issues) can be global.Logical formLearned from25 sentences. Pollution can be from runoff.Logical formLearned from25 sentences. Pollution may undergo an abatement.Logical formLearned from25 sentences. Persons may reduce pollution.Logical formLearned from25 sentences. Pollution can be from sewage.Logical formLearned from25 sentences. Pollution can be from a country.Logical formLearned from25 sentences. A (water pollution) can be urban.Logical formLearned from25 sentences.