Pollution can be across a country.Logical formLearned from5 sentences. Pollution may prompt a shutdown of factories.Logical formLearned from5 sentences. Pollution may be gone.Logical formLearned from5 sentences. (Pollution aerosols) can be in the atmosphere.Logical formLearned from5 sentences. A haze can be pollution.Logical formLearned from5 sentences. A country may unveil (emergency pollution controls).Logical formLearned from5 sentences. A level can be for (carbon pollution).Logical formLearned from5 sentences. An increase can be in light pollution.Logical formLearned from5 sentences. A country may face (pollution problems).Logical formLearned from5 sentences. Pollution can be in oceans.Logical formLearned from5 sentences. (Pollution levels) may stay low.Logical formLearned from5 sentences. Smoking may cause pollution.Logical formLearned from5 sentences. Levels of (ozone pollution) may contribute to a risk of hospitalization.Logical formLearned from5 sentences. (Flame retardant pollution) can be in the industrialized world.Logical formLearned from5 sentences. A background may be dominated by fears of pollution.Logical formLearned from5 sentences.