Rectangles: (5 entries)
  0: Rectangle: x1=0, y1=0, x2=0, y2=0
  1: Rectangle: x1=486, y1=302, x2=522, y2=316
  2: Rectangle: x1=632, y1=392, x2=678, y2=410
  3: Rectangle: x1=0, y1=0, x2=0, y2=0
  4: Rectangle: x1=0, y1=0, x2=0, y2=0