Rectangles: (5 entries)
  0: Rectangle: x1=0, y1=0, x2=0, y2=0
  1: Rectangle: x1=50, y1=171, x2=150, y2=185
  2: Rectangle: x1=70, y1=211, x2=190, y2=229
  3: Rectangle: x1=86, y1=260, x2=234, y2=282
  4: Rectangle: x1=97, y1=293, x2=263, y2=317