Rectangles: (5 entries)
  0: Rectangle: x1=0, y1=0, x2=0, y2=0
  1: Rectangle: x1=524, y1=318, x2=560, y2=332
  2: Rectangle: x1=681, y1=413, x2=727, y2=431
  3: Rectangle: x1=0, y1=0, x2=0, y2=0
  4: Rectangle: x1=0, y1=0, x2=0, y2=0