{
    "action": "tool_call",
    "reasoning": "No query results are available in this turn, so I can't cite numbers from the earlier draft. I'll re-check the one claimed inconsistency, how sleep_debt_category relates to total_sleep_hours, with a single query.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT sleep_debt_category, COUNT(*) AS n, MIN(total_sleep_hours) AS min_hours, MAX(total_sleep_hours) AS max_hours, AVG(total_sleep_hours) AS avg_hours FROM raw.bedtime_screentime_sleep_debt GROUP BY sleep_debt_category ORDER BY min_hours",
        "purpose": "Check whether sleep_debt_category maps to non-overlapping total_sleep_hours ranges",
        "source": "raw"
    }
}