Risks may be associated with pollution.Logical formLearned from4 sentences. A (pollution control authority) may decide that something-is-the-case.Logical formLearned from4 sentences. (Air pollution) may cause (acid rain).Logical formLearned from4 sentences. Pollution can be from stationary sources.Logical formLearned from4 sentences. (Pollution problems) may manifest seriousness.Logical formLearned from4 sentences. A (pollution control equipment) can be certified.Logical formLearned from4 sentences. A person can be responsible for pollution.Logical formLearned from4 sentences. (Air pollution) can be from dust.Logical formLearned from4 sentences. Pollution can be severe that something-is-the-case.Logical formLearned from4 sentences. Pollution can be on roads.Logical formLearned from4 sentences. Goods may be used in (pollution control).Logical formLearned from4 sentences. Light pollution can be from cities.Logical formLearned from4 sentences. Pollution can be to health.Logical formLearned from4 sentences. Pollution can be insidious.Logical formLearned from4 sentences. An approach can be to (mercury pollution).Logical formLearned from4 sentences.