{
    "action": "tool_call",
    "reasoning": "I have country-level distribution from step-0 showing brewers and places across 30 countries. Now I need to aggregate by continent to show the regional concentration, and then check if there's meaningful sub-country geographic distribution (states/regions) to give a complete picture of geographic distribution.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT c.continent, COUNT(DISTINCT b.brewer_id) as brewers, COUNT(DISTINCT p.place_id) as places FROM raw.countries c LEFT JOIN raw.brewers b ON c.country_id = b.country_id LEFT JOIN raw.places p ON c.country_id = p.country_id GROUP BY c.continent ORDER BY brewers DESC",
        "purpose": "Get continent-level aggregation to show regional concentration of brewers and places",
        "source": "raw"
    }
}