{
    "action": "tool_call",
    "reasoning": "No tool results are visible in evidence, so I can't cite the numbers from my earlier draft. I'll pull the per-species aggregates from the gold table to ground the petal length claims before answering.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT species, row_count, petal_length__min, petal_length__max, petal_length__avg, petal_width__min, petal_width__max, petal_width__avg, sepal_length__min, sepal_length__max, sepal_length__avg, sepal_width__min, sepal_width__max, sepal_width__avg FROM iris_by_species",
        "purpose": "Compare per-species ranges and means of each measure to judge which best separates species",
        "source": "gold"
    }
}