captcha/coordinates/sample_0021/coordinates.json

{
  "image_list": [
    "image_1.png",
    "image_2.png",
    "image_3.png",
    "image_4.png",
    "image_5.png"
  ],
  "ground_truth_image_index": 4,
  "arrow_box": [
    [
      579,
      677,
      639,
      737
    ],
    [
      898,
      713,
      958,
      773
    ]
  ],
  "submit_box": [
    40,
    620,
    375,
    750
  ]
}