{
    "action": "tool_call",
    "reasoning": "The question isn't visible here, but the likely goal is to see which features separate the species. The gold table iris_by_species already holds per-species aggregates, so I'll query it first.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT * FROM iris_by_species",
        "purpose": "Per-species aggregates of sepal and petal measurements to see which features separate the species",
        "source": "gold"
    }
}