(Pollution standards) can be environmental.Logical formLearned from4 sentences. (Pollution incidents) can be accidental.Logical formLearned from4 sentences. Natural environment may undergo pollution.Logical formLearned from4 sentences. (Air pollution) may undergo a treatment.Logical formLearned from4 sentences. Charges can be on pollution.Logical formLearned from4 sentences. Reductions can be in (air pollution).Logical formLearned from4 sentences. Pollution can be in air.Logical formLearned from4 sentences. Pollution can be from a sector.Logical formLearned from4 sentences. Emissions can be a source of (air pollution).Logical formLearned from4 sentences. A (metal pollution) can be toxic.Logical formLearned from4 sentences. Problems may include pollution.Logical formLearned from4 sentences. Scrubbers can be for (air pollution control equipment).Logical formLearned from4 sentences. An effect of (air pollution) may remain within limits.Logical formLearned from4 sentences. (Pollution reduction measures) can be effective.Logical formLearned from4 sentences. A blame can be for pollution.Logical formLearned from4 sentences.