{
    "action": "tool_call",
    "reasoning": "No tool results are visible in evidence, so I can't rely on the earlier numbers. Re-pull the per-species aggregates from the gold table to ground the petal_length claims.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT * FROM iris_by_species",
        "purpose": "Per-species averages, min, max and median of each measure to judge which metric separates species best",
        "source": "gold"
    }
}