{
    "action": "tool_call",
    "reasoning": "No evidence is in hand yet, so I need to pull the per-species stats from the gold table before making any claims about which features separate the species.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT * FROM Iris_by_Species",
        "purpose": "Per-species averages, min and max of each measurement to compare sepal and petal separation",
        "source": "gold"
    }
}