[
  {
    "input": {
      "vals": [0, 1, 2, 3, 4, 5, 6, 7]
    },
    "output": {
      "flagged": true,
      "parts": {
        "first": 0,
        "last3": [3, 4, 5, 6, 7]
      }
    },
    "states": ["X"],
    "task_behavior": {
    }
  }
]