Rectangles: (5 entries)
  0: Rectangle: x1=0, y1=0, x2=0, y2=0
  1: Rectangle: x1=274, y1=645, x2=304, y2=655
  2: Rectangle: x1=358, y1=830, x2=391, y2=841
  3: Rectangle: x1=438, y1=1021, x2=477, y2=1034
  4: Rectangle: x1=481, y1=1150, x2=537, y2=1165