Persons may start pollution.Logical formLearned from9 sentences. Sources can be constituted-of-or-filled-with (mercury pollution).Logical formLearned from9 sentences. Everglades may undergo pollution.Logical formLearned from9 sentences. A system can be constituted-of-or-filled-with (pollution credits).Logical formLearned from9 sentences. A culture may undergo pollution.Logical formLearned from9 sentences. A full scale may pertain-to a (pollution nightmare).Logical formLearned from9 sentences. (Air pollution controls) can be strict.Logical formLearned from9 sentences. Indoor (air pollution) may have some sources.Logical formLearned from9 sentences. Pollution can be in streams.Logical formLearned from9 sentences. Pollution can be on a river.Logical formLearned from9 sentences. Some percent of some cars may emit pollution from a pipe.Logical formLearned from9 sentences. (Air pollution) may exact a toll.Logical formLearned from9 sentences. Pollution can be from plants.Logical formLearned from9 sentences. Leaks may come on_top_of pollution.Logical formLearned from9 sentences. (Pollution sites) may pertain-to a nation.Logical formLearned from9 sentences.