captcha/coordinates/sample_0003/coordinates.json

{
  "image_list": [
    "image_1.png",
    "image_2.png",
    "image_3.png",
    "image_4.png",
    "image_5.png"
  ],
  "ground_truth_image_index": 1,
  "arrow_box": [
    [
      510,
      671,
      570,
      731
    ],
    [
      824,
      702,
      884,
      762
    ]
  ],
  "submit_box": [
    40,
    620,
    375,
    750
  ]
}