Ключевые слова: africa, appointment, architecture, black, center, circle, clay, concrete, constructed, crossing, day, dirtied, disrobed, divide, earth, electricity, equator, flower, global positioning system, globe, grass, greenwich, ground, historical building, known, latitude, line, longitude, marker, meridian, middle, north, parallel, place, pole, red, ring, road, sculpture, signs, sky, south, sphere, sunrise, sunset, uganda, white, wire, yellow, zero,