{
  "synthetic": true,
  "reports": [
    {
      "id": "report-1",
      "kind": "preprint",
      "study": "study-A"
    },
    {
      "id": "report-2",
      "kind": "journal version",
      "study": "study-A"
    },
    {
      "id": "report-3",
      "kind": "separate report",
      "study": null
    }
  ],
  "rationale": "Reports 1 and 2 are explicitly declared versions of the same synthetic study. Report 3 has unresolved cohort overlap; no independence is inferred.",
  "resolved_studies": 1,
  "unresolved_reports": 1
}