{
    "action": "tool_call",
    "reasoning": "No evidence for the earlier figures is available in this context, so I'll recompute the categorical profile before answering: distinct counts for the categorical columns and the top companies by row count.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT company_name, stock_name, COUNT(*) AS n_rows, ROUND(100.0 * COUNT(*) / SUM(COUNT(*)) OVER (), 2) AS pct_of_rows, MIN(date) AS first_date, MAX(date) AS last_date FROM raw.semi_conductor_se GROUP BY company_name, stock_name ORDER BY n_rows DESC LIMIT 15",
        "purpose": "Top companies/tickers by row count with share of total and history span",
        "source": "raw"
    }
}