{
    "action": "tool_call",
    "reasoning": "No evidence is available in this turn, so I'll compute the per-website profile in one query before answering about natural segmentation.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT WEBSITE, COUNT(*) AS page_rows, MIN(YEAR) AS first_year, MAX(YEAR) AS last_year, SUM(\"PAGE VIEWS\") AS total_page_views, SUM(\"UNIQUE VIEWS\") AS total_unique_views, SUM(ENTRANCES) AS total_entrances, AVG(\"BOUNCE RATE (%)\") AS avg_bounce_pct, AVG(\"EXIT RATE (%)\") AS avg_exit_pct, AVG(\"AVERAGE TIME ON PAGE (SECONDS)\") AS avg_time_on_page_sec FROM raw.Website_Analytics GROUP BY WEBSITE ORDER BY total_page_views DESC",
        "purpose": "Per-website segmentation profile: scale, lifespan and behaviour",
        "source": "raw"
    }
}