{
    "action": "tool_call",
    "reasoning": "Start with the gold table Iris_by_Species, which already holds per-species aggregates of all four measures, to see which features separate the species.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT * FROM Iris_by_Species",
        "purpose": "Per-species aggregates (avg/min/max/median) of all four measurements to compare feature separation",
        "source": "gold"
    }
}