(Pollution problems) can be in a world-city.Logical formLearned from3 sentences. Backwaters may undergo pollution.Logical formLearned from3 sentences. Pollution may enter a lake.Logical formLearned from3 sentences. Issues may be related to (pollution control).Logical formLearned from3 sentences. An investigation can be into pollution.Logical formLearned from3 sentences. A rate can be constituted-of-or-filled-with pollution.Logical formLearned from3 sentences. A (particle pollution) can be annual.Logical formLearned from3 sentences. (Pollution complaints) can be in a neighbourhood.Logical formLearned from3 sentences. Emissions can be a source of (pollution complaints).Logical formLearned from3 sentences. Pollution can be from sprays.Logical formLearned from3 sentences. Pollution can be mild.Logical formLearned from3 sentences. Pollution can be by domestic wastes.Logical formLearned from3 sentences. Pollution can be from boats.Logical formLearned from3 sentences. (Air pollution) may decrease.Logical formLearned from3 sentences. (Possibility exists) may pertain-to a genetic pollution.Logical formLearned from3 sentences.