[
  {
    "type": "message",
    "role": "user",
    "content": [
      {
        "type": "input_text",
        "text": "Describe what you see in this image and tell me a short story inspired by it about {{topic}}."
      },
      {
        "type": "input_image",
        "image_url": "{{image_url}}"
      }
    ]
  }
]