Pollution may undergo a discovery.Logical formLearned from6 sentences. Pollutions can be serious.Logical formLearned from6 sentences. A person may talk about pollution.Logical formLearned from6 sentences. Diseases may be related to (air pollution).Logical formLearned from6 sentences. Pollution can be in water.Logical formLearned from6 sentences. Anger can be over pollution.Logical formLearned from6 sentences. Residents may complain about pollution.Logical formLearned from6 sentences. An (ozone pollution) may pertain-to a nation.Logical formLearned from6 sentences. (Ocean pollution) can be a problem.Logical formLearned from6 sentences. A growth can be in pollution.Logical formLearned from6 sentences. A way can be to reducing pollution.Logical formLearned from6 sentences. A government may limit pollution from factories.Logical formLearned from6 sentences. Poor countries may limit pollution.Logical formLearned from6 sentences. Groundwater may undergo pollution.Logical formLearned from6 sentences. A city may record (pollution levels).Logical formLearned from6 sentences.