[
  {
    "id": "event-a",
    "study": "CLD-SYN-001",
    "subject": "SYN-001",
    "report": "Brief discomfort after walking",
    "start": "2025-02-03",
    "end": "2025-02-04"
  },
  {
    "id": "event-b",
    "study": "CLD-SYN-001",
    "subject": "SYN-002",
    "report": "Intermittent fictional symptom",
    "start": "2025-02",
    "end": null
  }
]