{
    "action": "tool_call",
    "reasoning": "My previous reply was prose rather than a JSON action, and no query results are visible in this context. I'll re-query the gold table raw_kaggle_by_Surface so the final answer rests on a rendered result.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT * FROM raw_kaggle_by_Surface",
        "purpose": "Per-surface summary of aces, double faults, rank and row counts",
        "source": "gold"
    }
}