A round can be constituted-of-or-filled-with pollution.Logical formLearned from4 sentences. Environmentalists may complain of pollution.Logical formLearned from4 sentences. A spate can be constituted-of-or-filled-with (water pollution incidents).Logical formLearned from4 sentences. A (health risk) can be from (air pollution).Logical formLearned from4 sentences. (Health risks) can be from (air pollution).Logical formLearned from4 sentences. Decades can be constituted-of-or-filled-with (air pollution).Logical formLearned from4 sentences. Surveillance can be in case of (pollution crises).Logical formLearned from4 sentences. A (pollution index) can be in a world-city.Logical formLearned from4 sentences. A link can be between pollution.Logical formLearned from4 sentences. A reminder may pertain-to pollution.Logical formLearned from4 sentences. A risk can be constituted-of-or-filled-with (biometric pollution).Logical formLearned from4 sentences. A string can be constituted-of-or-filled-with (pollution accusations).Logical formLearned from4 sentences. Pollution may come from some sources.Logical formLearned from4 sentences. Technology may prevent pollution.Logical formLearned from4 sentences. Pollution may harm health.Logical formLearned from4 sentences.