A (pollution situation) may worsen.Logical formLearned from3 sentences. Pollution may lead to some problems.Logical formLearned from3 sentences. (Air pollution) may decrease by some percent.Logical formLearned from3 sentences. A (wave oil pollution) can be black.Logical formLearned from3 sentences. Pollution may undergo repercussions.Logical formLearned from3 sentences. (Water pollution) can be in a lake.Logical formLearned from3 sentences. A penalty can be for pollution.Logical formLearned from3 sentences. Some percent of an (air pollution) may be created by (motor vehicles).Logical formLearned from3 sentences. (Pollution control efforts) may pertain-to a city.Logical formLearned from3 sentences. Pollution can be to human health.Logical formLearned from3 sentences. (Sulfur dioxide) can be (pollution problem).Logical formLearned from3 sentences. (Pollution rates) may increase.Logical formLearned from3 sentences. A (space pollution) may continue unchecked.Logical formLearned from3 sentences. A regulation can be on (pollution control).Logical formLearned from3 sentences. Cities may undergo pollution.Logical formLearned from3 sentences.