(Environment pollution) may result from (oil exploitation).Logical formLearned from3 sentences. Pollution may be caused by decades of drilling.Logical formLearned from3 sentences. A level of (air pollution) can be significant.Logical formLearned from3 sentences. (Air pollution) can be from some sources.Logical formLearned from3 sentences. A severity may pertain-to an (air pollution problem).Logical formLearned from3 sentences. Pollution can be from a us-state.Logical formLearned from3 sentences. (Pollution episodes) may continue.Logical formLearned from3 sentences. (Nitrogen pollution) may increase around the world.Logical formLearned from3 sentences. (Pollution controls) may be puted in place.Logical formLearned from3 sentences. Problems may relate to pollution.Logical formLearned from3 sentences. (Mercury pollution) can be from (gold mining).Logical formLearned from3 sentences. Pollution may be caused by industries.Logical formLearned from3 sentences. A market can be for pollution.Logical formLearned from3 sentences. An (air pollution) can be foul.Logical formLearned from3 sentences. Fines can be for environmental pollution.Logical formLearned from3 sentences.