A us-state may undergo pollution.Logical formLearned from5 sentences. Pollution may be caused by transportation.Logical formLearned from5 sentences. Cities may suffer from (air pollution).Logical formLearned from5 sentences. Matters can be constituted-of-or-filled-with pollution.Logical formLearned from5 sentences. (Arsenic pollution) can be in (drinking water).Logical formLearned from5 sentences. (Fishing grounds) may undergo pollution.Logical formLearned from5 sentences. Associations can be between (air pollution).Logical formLearned from5 sentences. A ground can be for pollution.Logical formLearned from5 sentences. Impacts can be on pollution.Logical formLearned from5 sentences. (Pollution control systems) can be costly.Logical formLearned from5 sentences. Flesh may undergo pollution.Logical formLearned from5 sentences. A (pollution watchdog) may pertain-to a country.Logical formLearned from5 sentences. Pollution can be localised.Logical formLearned from5 sentences. (Air pollution levels) can be in a world-city.Logical formLearned from5 sentences. Pollution may be caused by nitrates.Logical formLearned from5 sentences.