{
    "action": "tool_call",
    "reasoning": "The evidence from earlier steps isn't visible to me, so I won't repeat numbers I can't verify. I'll run one profiling query over the text Amount column and the Date column to ground the data-quality answer.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT COUNT(*) AS total_rows, COUNT(\"Amount in USD\") AS non_null_amount, SUM(CASE WHEN TRY_CAST(REPLACE(\"Amount in USD\", ',', '') AS DOUBLE) IS NOT NULL THEN 1 ELSE 0 END) AS parseable_amount, SUM(CASE WHEN \"Amount in USD\" = 'N/A' THEN 1 ELSE 0 END) AS plain_na, SUM(CASE WHEN LOWER(\"Amount in USD\") IN ('undisclosed','unknown') THEN 1 ELSE 0 END) AS undisclosed_unknown, SUM(CASE WHEN \"Amount in USD\" LIKE '%+' THEN 1 ELSE 0 END) AS plus_suffix, SUM(CASE WHEN \"Amount in USD\" LIKE '%' || chr(160) || '%' OR \"Amount in USD\" LIKE '%\\xc2\\xa0%' THEN 1 ELSE 0 END) AS nbsp_prefixed, SUM(CASE WHEN TRY_CAST(\"Date dd/mm/yyyy\" AS DATE) IS NULL AND TRY_STRPTIME(\"Date dd/mm/yyyy\", '%d/%m/%Y') IS NULL THEN 1 ELSE 0 END) AS unparseable_dates, SUM(CASE WHEN \"Date dd/mm/yyyy\" LIKE '%\\xc2\\xa0%' THEN 1 ELSE 0 END) AS nbsp_dates FROM raw.startup_funding",
        "purpose": "Profile Amount in USD and Date text quality: parseable, N/A, undisclosed, suffix and encoding artifacts",
        "source": "raw"
    }
}