geometry MULTIPOLYGON ZM (((30 10 40 300, 40 40 80 1600, 20 40 60 800, 10 20 30 200, 30 10 40 300))) MULTIPOLYGON ZM (((30 20 50 600, 45 40 85 1800, 10 40 50 400, 30 20 50 600)), ((15 5 20 75, 40 10 50 400, 10 20 30 200, 5 10 15 50, 15 5 20 75))) MULTIPOLYGON ZM (((40 40 80 1600, 20 45 65 900, 45 30 75 1350, 40 40 80 1600)), ((20 35 55 700, 10 30 40 300, 10 10 20 100, 30 5 35 150, 45 20 65 900, 20 35 55 700), (30 20 50 600, 20 15 35 300, 20 25 45 500, 30 20 50 600))) MULTIPOLYGON ZM EMPTY