An (oil pollution) can be catastrophic.Logical formLearned from4 sentences. A problem can be with (air pollution).Logical formLearned from4 sentences. (Air pollution) may reduce visibility.Logical formLearned from4 sentences. Pollution can be intermittent.Logical formLearned from4 sentences. Light pollution can be from a city.Logical formLearned from4 sentences. Pollution can be metallic.Logical formLearned from4 sentences. Thousands can be constituted-of-or-filled-with (air pollution sources).Logical formLearned from4 sentences. Some aspects can be constituted-of-or-filled-with light pollution.Logical formLearned from4 sentences. Light pollution may undergo a reduction.Logical formLearned from4 sentences. Resources may undergo pollution.Logical formLearned from4 sentences. A world can be without pollution.Logical formLearned from4 sentences. A region may undergo pollution.Logical formLearned from4 sentences. A buffer can be against pollution.Logical formLearned from4 sentences. (Water pollution) can be from mining.Logical formLearned from4 sentences. Variety can be constituted-of-or-filled-with (pollution prevention programs).Logical formLearned from4 sentences.