{
  "schema_version": "1.12.0",
  "fields": {
    "chart_id": {
      "type": "string",
      "description": "Chart identifier, shared by the original chart, reconstruction, and seed variants of the same chart."
    },
    "question_id": {
      "type": "string",
      "description": "Question identifier, shared by all variants for the same question."
    },
    "variant": {
      "type": "string",
      "description": "Chart variant: original, reconstruction, or seed_0 through seed_9."
    },
    "image": {
      "type": "string",
      "description": "Relative path to the released chart image; empty for original rows because upstream original images are not included."
    },
    "question": {
      "type": "string",
      "description": "Question asked about the chart image."
    },
    "answer": {
      "type": "string",
      "description": "Reference answer for the row's chart variant."
    },
    "chart_data": {
      "type": "string",
      "description": "Relative path to the released chart data JSON; empty for original rows."
    },
    "source_dataset_split": {
      "type": "string",
      "description": "Source dataset split identifier for this Chartographer row, combining the upstream dataset and split used in the release."
    },
    "source_row_index": {
      "type": "int",
      "description": "Zero-based row index in the upstream dataset split identified by source_dataset_split."
    }
  }
}