[
  {
    "messages": [
      {
        "role": "user",
        "content": "<image>Describe the provided synthetic example."
      },
      {
        "role": "assistant",
        "content": "Synthetic placeholder for the training data schema; not a clinical training record."
      }
    ],
    "images": [
      "synthetic/example.jpg"
    ],
    "skin_labels": 0
  }
]