{
    "action": "tool_call",
    "reasoning": "The gold table Iris_by_Species already holds per-species aggregates of every measure, so I'll query it first to see whether the natural grouping separates on the measurements.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT * FROM Iris_by_Species",
        "purpose": "Compare per-species measurement profiles to judge whether Species is a natural segmentation",
        "source": "gold"
    }
}