(Pollution problems) may pertain-to a country.Logical formLearned from41 sentences. Effects can be constituted-of-or-filled-with (air pollution).Logical formLearned from40 sentences. (Air pollution) can be in cities.Logical formLearned from40 sentences. Pollution may undergo emissions.Logical formLearned from40 sentences. An increase can be in (air pollution).Logical formLearned from39 sentences. Pollution can be from vehicles.Logical formLearned from39 sentences. A result may pertain-to pollution.Logical formLearned from39 sentences. Industrial pollution can be in a region.Logical formLearned from38 sentences. (Water pollution) can be in a country.Logical formLearned from38 sentences. Pollution can be vehicular.Logical formLearned from38 sentences. Waterways may undergo pollution.Logical formLearned from38 sentences. Pollution can be deadly.Logical formLearned from38 sentences. Pollution may worsen.Logical formLearned from38 sentences. Cuts can be in pollution.Logical formLearned from38 sentences. Particles can be constituted-of-or-filled-with pollution.Logical formLearned from37 sentences.