Ключевые слова: air, air pollution, architecture, blue, built structure, chimney, clean, clear sky, closeup, cloud, color image, condensation, contemporary, day, directly below, environment, factory, fumes, gray, high up, industry, industry chimney, new, nobody, old, outdoors, pipe, pollution, red, row, simplicity, single object, sky, smog, smoke, smoke stack, sparse, steam, sunlight, tall, tube, unhygienic, vertical, white,