(Pollution levels) may represent an increase.Logical formLearned from7 sentences. A reduction can be in (noise pollution).Logical formLearned from7 sentences. An (air pollution) can be everyday.Logical formLearned from7 sentences. A (pollution case) may pertain-to a us-state.Logical formLearned from7 sentences. An impact can be on (air pollution).Logical formLearned from7 sentences. Pollution may pertain-to an area.Logical formLearned from7 sentences. Pollution can be appalling.Logical formLearned from7 sentences. A (pollution reduction scheme) may pertain-to a government.Logical formLearned from7 sentences. Exposure can be to levels of pollution.Logical formLearned from7 sentences. A world-city may deal with a (pollution problem).Logical formLearned from7 sentences. A person may see pollution.Logical formLearned from7 sentences. A program may cut pollution.Logical formLearned from7 sentences. Particles of (air pollution) may affect (heart function).Logical formLearned from7 sentences. A form can be constituted-of-or-filled-with (noise pollution).Logical formLearned from7 sentences. Pollution can be short-lived.Logical formLearned from7 sentences.