{
    "action": "tool_call",
    "reasoning": "The earlier answer quoted surface numbers, but no evidence is visible for them. I'll pull raw_kaggle_by_Surface from gold to check and ground those claims before answering.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT * FROM raw_kaggle_by_Surface",
        "purpose": "Ground surface-level serve profile figures (aces, double faults, serve points, rank) per surface",
        "source": "gold"
    }
}