{
  "article_id": "A015",
  "synthetic": true,
  "cases": [
    [
      {
        "id": "01",
        "status": "x"
      },
      {
        "id": "01",
        "status": "x"
      }
    ],
    [
      {
        "id": "01",
        "status": "x"
      },
      {
        "id": "01",
        "status": "y"
      }
    ],
    [
      {
        "id": "01",
        "note": "same"
      },
      {
        "id": "02",
        "note": "same"
      }
    ],
    [
      {
        "note": "missing"
      }
    ]
  ],
  "expected_kinds": [
    "identical_duplicate",
    "conflicting_duplicate",
    "unique",
    "missing_key"
  ]
}