Pollution can be prevalent.Logical formLearned from3 sentences. The natural world may undergo pollution.Logical formLearned from3 sentences. A common cause can be constituted-of-or-filled-with thermal pollution.Logical formLearned from3 sentences. Dangers can be from pollution.Logical formLearned from3 sentences. Pollution can be attributable to aviation.Logical formLearned from3 sentences. (Air pollution) can be from vehicles.Logical formLearned from3 sentences. Mills may produce pollution.Logical formLearned from3 sentences. Pollution may be contained.Logical formLearned from3 sentences. A (pollution control) can be mandatory.Logical formLearned from3 sentences. Pollution may reach a level.Logical formLearned from3 sentences. A visibility of celestial objects may be affected by light pollution.Logical formLearned from3 sentences. Categories can be constituted-of-or-filled-with (air pollution).Logical formLearned from3 sentences. A (chemical pollution) can be heavy.Logical formLearned from3 sentences. Pollution can be by a (city council).Logical formLearned from3 sentences. Industries can be a cause of pollution.Logical formLearned from3 sentences.