An (air pollution) can be worse.Logical formLearned from11 sentences. Pollution can be religious.Logical formLearned from11 sentences. A bay may undergo pollution.Logical formLearned from11 sentences. (Air pollution) may become a problem.Logical formLearned from11 sentences. Major stationary sources can be constituted-of-or-filled-with (air pollution).Logical formLearned from11 sentences. Pollution may undergo a removal.Logical formLearned from11 sentences. A relationship can be between pollution.Logical formLearned from11 sentences. Streams may undergo pollution.Logical formLearned from11 sentences. Pollution may undergo an indication.Logical formLearned from11 sentences. (Air pollution) may worsen.Logical formLearned from11 sentences. Areas can be constituted-of-or-filled-with (air pollution).Logical formLearned from11 sentences. (Air pollution) can be from automobiles.Logical formLearned from11 sentences. Issues may be related to pollution.Logical formLearned from11 sentences. (Pollution levels) can be indoor.Logical formLearned from11 sentences. (Pollution prevention) may undergo a use.Logical formLearned from11 sentences.