Task: Error-Detect (source dataset: Relational-Tables)

Task: 
You are given a column of data from a table. Your job is to examine each value in the column, and identify if there is any clear data error in the column. An data error in the context of the column, can be values that are misspelled (typos), values that are formatted incorrectly, or values that are semantically incompatible with the rest of the column, etc., such that we can determine without ambiguity that such values are errors in the column. 

Since real-world data can vary widely in meaning and format, if you are uncertain whether a value is an error, please do not mark it as one. Only flag a value if you are confident that it is clearly a data error.

No explanation and return the final answer as a JSON object, {"obvious_error": "<CELL>"}. If you detect no error in the data, return {"obvious_error": null}.

Column:
| last date of month      |
|:------------------------|
| 2000-01-31 00:00:00.000 |
| 2001-01-31 00:00:00.000 |
| 2002-01-31 00:00:00.000 |
| 2003-01-31 00:00:00.000 |
| 2004-01-31 00:00:00.000 |
| 2005-01-31 00:00:00.000 |
| 2006-01-31 00:00:00.000 |
| 2007-01-31 00:00:00.000 |
| 2008-01-31 00:00:00.000 |
| 2009-01-31 00:00:00.000 |
| 2010-01-31 00:00:00.000 |
| 2011-01-31 00:00:00.000 |
| 2012-01-31 00:00:00.000 |
| 2013-01-31 00:00:00.000 |
| 2014-01-31 00:00:00.000 |
| 2015-01-31 00:00:00.000 |
| 2016-01-31 00:00:00.000 |
| 2017-01-31 00:00:00.000 |
| 2018-01-31 00:00:00.000 |
| 2019-01-31 00:00:00.000 |
| 2020-01-31 00:00:00.000 |
| 2021-01-31 00:00:00.000 |
| 2022-01-31 00:00:00.000 |
| 2023-01-31 00:00:00.000 |
| 2024-01-31 00:00:00.000 |
| 2025-01-31 00:00:00.000 |
| 2026-01-31 00:00:00.000 |
| 2027-01-31 00:00:00.000 |
| 2028-01-31 00:00:00.000 |
| 2029-01-31 00:00:00.000 |
| 2030-01-31 00:00:00.000 |
| 2031-01-31 00:00:00.000 |
| 2032-01-31 00:00:00.000 |
| 2033-01-31 00:00:00.000 |
| 2034-01-31 00:00:00.000 |
| 2000-06-30 00:00:00.000 |
| 2002-06-30 00:00:00.000 |
| 2003-06-30 00:00:00.000 |
| 2004-06-30 00:00:00.000 |
| 2005-06-30 00:00:00.000 |
| 2008-06-30 00:00:00.000 |
| 2009-06-30 00:00:00.000 |
| 2010-06-30 00:00:00.000 |
| 2011-06-30 00:00:00.000 |
| 2013-06-30 00:00:00.000 |
| 2014-06-30 00:00:00.000 |
| 2015-06-30 00:00:00.000 |
| 2016-06-30 00:00:00.000 |
| 2019-06-30 00:00:00.000 |
| 2020-06-30 00:00:00.000 |
| 2021-06-30 00:00:00.000 |
| 2022-06-30 00:00:00.000 |
| 2024-06-30 00:00:00.000 |
| 2025-06-30 00:00:00.000 |
| 2026-06-30 00:00:00.000 |
| 2027-06-30 00:00:00.000 |
| 2028-06-30 00:00:00.000 |
| 2030-06-30 00:00:00.000 |
| 2031-06-30 00:00:00.000 |
| 2032-06-30 00:00:00.000 |
| 2033-06-30 00:00:00.000 |
| 2001-06-30 00:00:00.000 |
| 2006-06-30 00:00:00.000 |
| 2007-06-30 00:00:00.000 |
| 2012-06-30 00:00:00.000 |
| 2017-06-30 00:00:00.000 |
| 2018-06-30 00:00:00.000 |
| 2023-06-30 00:00:00.000 |
| 2029-06-30 00:00:00.000 |
| 2034-06-30 00:00:00.000 |
| 2000-07-31 00:00:00.000 |
| 2001-07-31 00:00:00.000 |
| 2002-07-31 00:00:00.000 |
| 2003-07-31 00:00:00.000 |
| 2004-07-31 00:00:00.000 |
| 2005-07-31 00:00:00.000 |
| 2007-07-31 00:00:00.000 |
| 2008-07-31 00:00:00.000 |
| 2009-07-31 00:00:00.000 |
| 2010-07-31 00:00:00.000 |
| 2011-07-31 00:00:00.000 |
| 2012-07-31 00:00:00.000 |
| 2013-07-31 00:00:00.000 |
| 2014-07-31 00:00:00.000 |
| 2015-07-31 00:00:00.000 |
| 2016-07-31 00:00:00.000 |
| 2018-07-31 00:00:00.000 |
| 2019-07-31 00:00:00.000 |
| 2020-07-31 00:00:00.000 |
| 2021-07-31 00:00:00.000 |
| 2022-07-31 00:00:00.000 |
| 2024-07-31 00:00:00.000 |
| 2025-07-31 00:00:00.000 |
| 2026-07-31 00:00:00.000 |
| 2027-07-31 00:00:00.000 |
| 2028-07-31 00:00:00.000 |
| 2029-07-31 00:00:00.000 |
| 2030-07-31 00:00:00.000 |
| 2031-07-31 00:00:00.000 |
| 2032-07-31 00:00:00.000 |
| 2033-07-31 00:00:00.000 |
| 2006-07-31 00:00:00.000 |
| 2017-07-31 00:00:00.000 |
| 2023-07-31 00:00:00.000 |
| 2034-07-31 00:00:00.000 |
| 2000-05-31 00:00:00.000 |
| 2001-05-31 00:00:00.000 |
| 2002-05-31 00:00:00.000 |
| 2004-05-31 00:00:00.000 |
| 2005-05-31 00:00:00.000 |
| 2006-05-31 00:00:00.000 |
| 2007-05-31 00:00:00.000 |
| 2010-05-31 00:00:00.000 |
| 2011-05-31 00:00:00.000 |
| 2012-05-31 00:00:00.000 |
| 2013-05-31 00:00:00.000 |
| 2016-05-31 00:00:00.000 |
| 2017-05-31 00:00:00.000 |
| 2018-05-31 00:00:00.000 |
| 2019-05-31 00:00:00.000 |
| 2021-05-31 00:00:00.000 |
| 2022-05-31 00:00:00.000 |
| 2023-05-31 00:00:00.000 |
| 2024-05-31 00:00:00.000 |
| 2027-05-31 00:00:00.000 |
| 2028-05-31 00:00:00.000 |
| 2029-05-31 00:00:00.000 |
| 2030-05-31 00:00:00.000 |
| 2032-05-31 00:00:00.000 |
| 2033-05-31 00:00:00.000 |
| 2034-05-31 00:00:00.000 |
| 2003-05-31 00:00:00.000 |
| 2008-05-31 00:00:00.000 |
| 2009-05-31 00:00:00.000 |
| 2014-05-31 00:00:00.000 |
| 2015-05-31 00:00:00.000 |
| 2020-05-31 00:00:00.000 |
| 2025-05-31 00:00:00.000 |
| 2026-05-31 00:00:00.000 |
| 2031-05-31 00:00:00.000 |
| 2001-03-31 00:00:00.000 |
| 2002-03-31 00:00:00.000 |
| 2003-03-31 00:00:00.000 |
| 2006-03-31 00:00:00.000 |
| 2007-03-31 00:00:00.000 |
| 2008-03-31 00:00:00.000 |
| 2012-03-31 00:00:00.000 |
| 2013-03-31 00:00:00.000 |
| 2014-03-31 00:00:00.000 |
| 2017-03-31 00:00:00.000 |
| 2018-03-31 00:00:00.000 |
| 2019-03-31 00:00:00.000 |
| 2023-03-31 00:00:00.000 |
| 2024-03-31 00:00:00.000 |
| 2025-03-31 00:00:00.000 |
| 2029-03-31 00:00:00.000 |
| 2030-03-31 00:00:00.000 |
| 2031-03-31 00:00:00.000 |
| 2034-03-31 00:00:00.000 |
| 2000-03-31 00:00:00.000 |
| 2004-03-31 00:00:00.000 |
| 2005-03-31 00:00:00.000 |
| 2009-03-31 00:00:00.000 |
| 2010-03-31 00:00:00.000 |
| 2011-03-31 00:00:00.000 |
| 2015-03-31 00:00:00.000 |
| 2016-03-31 00:00:00.000 |
| 2020-03-31 00:00:00.000 |
| 2021-03-31 00:00:00.000 |
| 2022-03-31 00:00:00.000 |
| 2026-03-31 00:00:00.000 |
| 2027-03-31 00:00:00.000 |
| 2028-03-31 00:00:00.000 |
| 2032-03-31 00:00:00.000 |
| 2033-03-31 00:00:00.000 |
| 2000-04-30 00:00:00.000 |
| 2028-04-30 00:00:00.000 |
| 2001-04-30 00:00:00.000 |
| 2002-04-30 00:00:00.000 |
| 2003-04-30 00:00:00.000 |
| 2006-04-30 00:00:00.000 |
| 2007-04-30 00:00:00.000 |
| 2008-04-30 00:00:00.000 |
| 2009-04-30 00:00:00.000 |
| 2012-04-30 00:00:00.000 |
| 2013-04-30 00:00:00.000 |
| 2014-04-30 00:00:00.000 |
| 2015-04-30 00:00:00.000 |
| 2017-04-30 00:00:00.000 |
| 2018-04-30 00:00:00.000 |
| 2019-04-30 00:00:00.000 |
| 2020-04-30 00:00:00.000 |
| 2023-04-30 00:00:00.000 |
| 2024-04-30 00:00:00.000 |
| 2025-04-30 00:00:00.000 |
| 2026-04-30 00:00:00.000 |
| 2029-04-30 00:00:00.000 |
| 2030-04-30 00:00:00.000 |
| 2031-04-30 00:00:00.000 |
| 2034-04-30 00:00:00.000 |
| 2004-04-30 00:00:00.000 |
| 2005-04-30 00:00:00.000 |
| 2010-04-30 00:00:00.000 |
| 2011-04-30 00:00:00.000 |
| 2016-04-30 00:00:00.000 |
| 2021-04-30 00:00:00.000 |
| 2022-04-30 00:00:00.000 |
| 2027-04-30 00:00:00.000 |
| 2032-04-30 00:00:00.000 |
| 2033-04-30 00:00:00.000 |
| 2000-08-31 00:00:00.000 |
| 2004-08-31 00:00:00.000 |
| 2005-08-31 00:00:00.000 |
| 2010-08-31 00:00:00.000 |
| 2011-08-31 00:00:00.000 |
| 2016-08-31 00:00:00.000 |
| 2021-08-31 00:00:00.000 |
| 2022-08-31 00:00:00.000 |
| 2027-08-31 00:00:00.000 |
| 2028-08-31 00:00:00.000 |
| 2032-08-31 00:00:00.000 |
| 2033-08-31 00:00:00.000 |
| 2001-08-31 00:00:00.000 |
| 2002-08-31 00:00:00.000 |
| 2003-08-31 00:00:00.000 |
| 2006-08-31 00:00:00.000 |
| 2007-08-31 00:00:00.000 |
| 2008-08-31 00:00:00.000 |
| 2009-08-31 00:00:00.000 |
| 2012-08-31 00:00:00.000 |
| 2013-08-31 00:00:00.000 |
| 2014-08-31 00:00:00.000 |
| 2015-08-31 00:00:00.000 |
| 2017-08-31 00:00:00.000 |
| 2018-08-31 00:00:00.000 |
| 2019-08-31 00:00:00.000 |
| 2020-08-31 00:00:00.000 |
| 2023-08-31 00:00:00.000 |
| 2024-08-31 00:00:00.000 |
| 2025-08-31 00:00:00.000 |
| 2026-08-31 00:00:00.000 |
| 2029-08-31 00:00:00.000 |
| 2030-08-31 00:00:00.000 |
| 2031-08-31 00:00:00.000 |
| 2034-08-31 00:00:00.000 |
| 2000-02-29 00:00:00.000 |
| 2004-02-29 00:00:00.000 |
| 2005-02-28 00:00:00.000 |
| 2006-02-28 00:00:00.000 |
| 2010-02-28 00:00:00.000 |
| 2011-02-28 00:00:00.000 |
| 2012-02-29 00:00:00.000 |
| 2016-02-29 00:00:00.000 |
| 2017-02-28 00:00:00.000 |
| 2021-02-28 00:00:00.000 |
| 2022-02-28 00:00:00.000 |
| 2023-02-28 00:00:00.000 |
| 2027-02-28 00:00:00.000 |
| 2028-02-29 00:00:00.000 |
| 2032-02-29 00:00:00.000 |
| 2033-02-28 00:00:00.000 |
| 2034-02-28 00:00:00.000 |
| 2001-02-28 00:00:00.000 |
| 2002-02-28 00:00:00.000 |
| 2007-02-28 00:00:00.000 |
| 2008-02-29 00:00:00.000 |
| 2009-02-28 00:00:00.000 |
| 2013-02-28 00:00:00.000 |
| 2015-02-28 00:00:00.000 |
| 2018-02-28 00:00:00.000 |
| 2019-02-28 00:00:00.000 |
| 2020-02-29 00:00:00.000 |
| 2024-02-29 00:00:00.000 |
| 2026-02-28 00:00:00.000 |
| 2029-02-28 00:00:00.000 |
| 2030-02-28 00:00:00.000 |
| 2003-02-28 00:00:00.000 |
| 2014-02-28 00:00:00.000 |
| 2025-02-28 00:00:00.000 |
| 2031-02-28 00:00:00.000 |
| 2000-09-30 00:00:00.000 |
| 2002-09-30 00:00:00.000 |
| 2003-09-30 00:00:00.000 |
| 2004-09-30 00:00:00.000 |
| 2005-09-30 00:00:00.000 |
| 2008-09-30 00:00:00.000 |
| 2009-09-30 00:00:00.000 |
| 2010-09-30 00:00:00.000 |
| 2011-09-30 00:00:00.000 |
| 2013-09-30 00:00:00.000 |
| 2014-09-30 00:00:00.000 |
| 2015-09-30 00:00:00.000 |
| 2016-09-30 00:00:00.000 |
| 2019-09-30 00:00:00.000 |
| 2020-09-30 00:00:00.000 |
| 2021-09-30 00:00:00.000 |
| 2022-09-30 00:00:00.000 |
| 2024-09-30 00:00:00.000 |
| 2025-09-30 00:00:00.000 |
| 2026-09-30 00:00:00.000 |
| 2027-09-30 00:00:00.000 |
| 2028-09-30 00:00:00.000 |
| 2030-09-30 00:00:00.000 |
| 2031-09-30 00:00:00.000 |
| 2032-09-30 00:00:00.000 |
| 2033-09-30 00:00:00.000 |
| 2001-09-30 00:00:00.000 |
| 2006-09-30 00:00:00.000 |
| 2007-09-30 00:00:00.000 |
| 2012-09-30 00:00:00.000 |
| 2017-09-30 00:00:00.000 |
| 2018-09-30 00:00:00.000 |
| 2023-09-30 00:00:00.000 |
| 2029-09-30 00:00:00.000 |
| 2034-09-30 00:00:00.000 |
| 2000-12-31 00:00:00.000 |
| 2002-12-31 00:00:00.000 |
| 2003-12-31 00:00:00.000 |
| 2004-12-31 00:00:00.000 |
| 2005-12-31 00:00:00.000 |
| 2008-12-31 00:00:00.000 |
| 2009-12-31 00:00:00.000 |
| 2010-12-31 00:00:00.000 |
| 2011-12-31 00:00:00.000 |
| 2013-12-31 00:00:00.000 |
| 2014-12-31 00:00:00.000 |
| 2015-12-31 00:00:00.000 |
| 2016-12-31 00:00:00.000 |
| 2019-12-31 00:00:00.000 |
| 2020-12-31 00:00:00.000 |
| 2021-12-31 00:00:00.000 |
| 2022-12-31 00:00:00.000 |
| 2024-12-31 00:00:00.000 |
| 2025-12-31 00:00:00.000 |
| 2026-12-31 00:00:00.000 |
| 2027-12-31 00:00:00.000 |
| 2028-12-31 00:00:00.000 |
| 2030-12-31 00:00:00.000 |
| 2031-12-31 00:00:00.000 |
| 2032-12-31 00:00:00.000 |
| 2033-12-31 00:00:00.000 |
| 2001-12-31 00:00:00.000 |
| 2006-12-31 00:00:00.000 |
| 2007-12-31 00:00:00.000 |
| 2012-12-31 00:00:00.000 |
| 2017-12-31 00:00:00.000 |
| 2018-12-31 00:00:00.000 |
| 2023-12-31 00:00:00.000 |
| 2029-12-31 00:00:00.000 |
| 2034-12-31 00:00:00.000 |
| 2000-11-30 00:00:00.000 |
| 2003-11-30 00:00:00.000 |
| 2004-11-30 00:00:00.000 |
| 2005-11-30 00:00:00.000 |
| 2006-11-30 00:00:00.000 |
| 2008-11-30 00:00:00.000 |
| 2009-11-30 00:00:00.000 |
| 2010-11-30 00:00:00.000 |
| 2011-11-30 00:00:00.000 |
| 2014-11-30 00:00:00.000 |
| 2015-11-30 00:00:00.000 |
| 2016-11-30 00:00:00.000 |
| 2017-11-30 00:00:00.000 |
| 2020-11-30 00:00:00.000 |
| 2021-11-30 00:00:00.000 |
| 2022-11-30 00:00:00.000 |
| 2023-11-30 00:00:00.000 |
| 2025-11-30 00:00:00.000 |
| 2026-11-30 00:00:00.000 |
| 2027-11-30 00:00:00.000 |
| 2028-11-30 00:00:00.000 |
| 2031-11-30 00:00:00.000 |
| 2032-11-30 00:00:00.000 |
| 2033-11-30 00:00:00.000 |
| 2034-11-30 00:00:00.000 |
| 2001-11-30 00:00:00.000 |
| 2002-11-30 00:00:00.000 |
| 2007-11-30 00:00:00.000 |
| 2012-11-30 00:00:00.000 |
| 2013-11-30 00:00:00.000 |
| 2018-11-30 00:00:00.000 |
| 2019-11-30 00:00:00.000 |
| 2024-11-30 00:00:00.000 |
| 2029-11-30 00:00:00.000 |
| 2030-11-30 00:00:00.000 |
| 2001-10-31 00:00:00.000 |
| 2002-10-31 00:00:00.000 |
| 2003-10-31 00:00:00.000 |
| 2004-10-31 00:00:00.000 |
| 2005-10-31 00:00:00.000 |
| 2006-10-31 00:00:00.000 |
| 2007-10-31 00:00:00.000 |
| 2008-10-31 00:00:00.000 |
| 2009-10-31 00:00:00.000 |
| 2010-10-31 00:00:00.000 |
| 2011-10-31 00:00:00.000 |
| 2012-10-31 00:00:00.000 |
| 2013-10-31 00:00:00.000 |
| 2014-10-31 00:00:00.000 |
| 2015-10-31 00:00:00.000 |
| 2016-10-31 00:00:00.000 |
| 2017-10-31 00:00:00.000 |
| 2018-10-31 00:00:00.000 |
| 2019-10-31 00:00:00.000 |
| 2020-10-31 00:00:00.000 |
| 2021-10-31 00:00:00.000 |
| 2022-10-31 00:00:00.000 |
| 2023-10-31 00:00:00.000 |
| 2024-10-31 00:00:00.000 |
| 2025-10-31 00:00:00.000 |
| 2026-10-31 00:00:00.000 |
| 2027-10-31 00:00:00.000 |
| 2029-10-31 00:00:00.000 |
| 2030-10-31 00:00:00.000 |
| 2031-10-31 00:00:00.000 |
| 2032-10-31 00:00:00.000 |
| 2033-10-31 00:00:00.000 |
| 2034-10-31 00:00:00.000 |
| 2000-10-31 00:00:00.000 |
| 2028-10-31 00:00:00.000 |
| 1753-01-01 00:00:00.000 |