Units can be constituted-of-or-filled-with pollution.Logical formLearned from4 sentences. Pollution may be linked with (energy production).Logical formLearned from4 sentences. (Pollution levels) can be in cities.Logical formLearned from4 sentences. (Air pollution) may kill.Logical formLearned from4 sentences. Pollution can be untreated.Logical formLearned from4 sentences. Information can be on (water pollution).Logical formLearned from4 sentences. Pollution may linger.Logical formLearned from4 sentences. Pollution can be from an industry.Logical formLearned from4 sentences. An answer can be to (air pollution).Logical formLearned from4 sentences. (Pollution standards) may undergo lowerings.Logical formLearned from4 sentences. (Air pollution control technologies) can be advanced.Logical formLearned from4 sentences. (Air pollution policies) can be improved.Logical formLearned from4 sentences. (Air pollution policies) can be in a region.Logical formLearned from4 sentences. Oceans may be attributed to an amount of pollution.Logical formLearned from4 sentences. (Air pollution) may undergo modellings.Logical formLearned from4 sentences.