Land may undergo pollution.Logical formLearned from50 sentences. Pollution can be visible.Logical formLearned from50 sentences. Pollution can be a concern.Logical formLearned from50 sentences. (Drinking water) may undergo pollution.Logical formLearned from49 sentences. Increases can be in pollution.Logical formLearned from49 sentences. A reduction can be in pollution.Logical formLearned from49 sentences. A cause can be constituted-of-or-filled-with (air pollution).Logical formLearned from48 sentences. (Water pollution) can be a problem.Logical formLearned from48 sentences. Air may undergo pollution.Logical formLearned from48 sentences. Pollution can be plastic.Logical formLearned from48 sentences. Pollution can be accidental.Logical formLearned from48 sentences. An (air pollution) can be dangerous.Logical formLearned from48 sentences. Pollution can be maritime.Logical formLearned from48 sentences. A sea may undergo pollution.Logical formLearned from48 sentences. A fight can be against (air pollution).Logical formLearned from47 sentences.