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:
| inv date                |
|:------------------------|
| 2019-01-22 00:00:00.000 |
| 2019-02-15 00:00:00.000 |
| 2019-02-18 00:00:00.000 |
| 2019-02-20 00:00:00.000 |
| 2019-02-25 00:00:00.000 |
| 2019-03-13 00:00:00.000 |
| 2019-03-16 00:00:00.000 |
| 2019-03-27 00:00:00.000 |
| 2019-04-11 00:00:00.000 |
| 2019-04-15 00:00:00.000 |
| 2019-04-19 00:00:00.000 |
| 2019-04-22 00:00:00.000 |
| 2019-04-23 00:00:00.000 |
| 2019-04-29 00:00:00.000 |
| 2019-05-17 00:00:00.000 |
| 2019-05-21 00:00:00.000 |
| 2019-05-26 00:00:00.000 |
| 2019-06-04 00:00:00.000 |
| 2019-06-12 00:00:00.000 |
| 2019-07-01 00:00:00.000 |
| 2019-07-02 00:00:00.000 |
| 2019-07-15 00:00:00.000 |
| 2019-07-21 00:00:00.000 |
| 2019-08-20 00:00:00.000 |
| 2019-08-21 00:00:00.000 |
| 2019-08-22 00:00:00.000 |
| 2019-08-24 00:00:00.000 |
| 2019-08-25 00:00:00.000 |
| 2019-09-02 00:00:00.000 |
| 2019-09-20 00:00:00.000 |
| 2019-09-25 00:00:00.000 |
| 2019-09-28 00:00:00.000 |
| 2019-10-08 00:00:00.000 |
| 2019-10-16 00:00:00.000 |
| 2019-10-27 00:00:00.000 |
| 2019-10-30 00:00:00.000 |
| 2019-11-01 00:00:00.000 |
| 2019-11-03 00:00:00.000 |
| 2019-11-14 00:00:00.000 |
| 2019-11-15 00:00:00.000 |
| 2019-11-17 00:00:00.000 |
| 2019-11-22 00:00:00.000 |
| 2019-12-12 00:00:00.000 |
| 2019-12-13 00:00:00.000 |
| 2019-12-20 00:00:00.000 |
| 2019-12-28 00:00:00.000 |
| 2019-12-29 00:00:00.000 |
| 2019-12-30 00:00:00.000 |
| 2020-01-18 00:00:00.000 |
| 2020-01-20 00:00:00.000 |
| 2020-01-21 00:00:00.000 |
| 2020-01-23 00:00:00.000 |
| 2020-01-27 00:00:00.000 |
| 2020-02-04 00:00:00.000 |
| 2020-02-15 00:00:00.000 |
| 2020-02-19 00:00:00.000 |
| 2020-02-23 00:00:00.000 |
| 2020-02-28 00:00:00.000 |
| 2020-03-31 00:00:00.000 |
| 2020-04-06 00:00:00.000 |
| 2020-04-11 00:00:00.000 |
| 2020-04-15 00:00:00.000 |
| 2020-04-25 00:00:00.000 |
| 2020-04-26 00:00:00.000 |
| 2020-05-02 00:00:00.000 |
| 2020-05-10 00:00:00.000 |
| 2020-05-13 00:00:00.000 |
| 2020-05-21 00:00:00.000 |
| 2020-05-23 00:00:00.000 |
| 2020-05-24 00:00:00.000 |
| 2020-05-26 00:00:00.000 |
| 2020-05-29 00:00:00.000 |
| 2020-05-31 00:00:00.000 |
| 2020-06-07 00:00:00.000 |
| 2020-06-25 00:00:00.000 |
| 2020-06-26 00:00:00.000 |
| 2020-06-30 00:00:00.000 |
| 2020-07-06 00:00:00.000 |
| 2020-07-10 00:00:00.000 |
| 2020-07-13 00:00:00.000 |
| 2020-07-16 00:00:00.000 |
| 2020-07-17 00:00:00.000 |
| 2020-08-07 00:00:00.000 |
| 2020-08-10 00:00:00.000 |
| 2020-08-15 00:00:00.000 |
| 2020-08-22 00:00:00.000 |
| 2020-09-12 00:00:00.000 |
| 2020-09-13 00:00:00.000 |
| 2020-09-14 00:00:00.000 |
| 2020-09-16 00:00:00.000 |
| 2020-09-27 00:00:00.000 |
| 2020-10-01 00:00:00.000 |
| 2020-10-14 00:00:00.000 |
| 2020-10-19 00:00:00.000 |
| 2020-11-08 00:00:00.000 |
| 2020-11-12 00:00:00.000 |
| 2020-11-14 00:00:00.000 |
| 2020-11-23 00:00:00.000 |
| 2020-11-30 00:00:00.000 |
| 2020-12-07 00:00:00.000 |
| 2020-12-11 00:00:00.000 |
| 2020-12-13 00:00:00.000 |
| 2020-12-17 00:00:00.000 |
| 2020-12-25 00:00:00.000 |
| 2020-12-27 00:00:00.000 |
| 2020-12-29 00:00:00.000 |
| 2021-01-09 00:00:00.000 |
| 2021-01-10 00:00:00.000 |
| 2021-01-31 00:00:00.000 |
| 2019-01-08 00:00:00.000 |
| 2019-01-09 00:00:00.000 |
| 2019-01-16 00:00:00.000 |
| 2019-01-18 00:00:00.000 |
| 2019-01-26 00:00:00.000 |
| 2019-02-03 00:00:00.000 |
| 2019-02-04 00:00:00.000 |
| 2019-02-13 00:00:00.000 |
| 2019-03-18 00:00:00.000 |
| 2019-03-30 00:00:00.000 |
| 2019-04-27 00:00:00.000 |
| 2019-05-02 00:00:00.000 |
| 2019-05-08 00:00:00.000 |
| 2019-05-18 00:00:00.000 |
| 2019-05-19 00:00:00.000 |
| 2019-05-23 00:00:00.000 |
| 2019-05-27 00:00:00.000 |
| 2019-06-03 00:00:00.000 |
| 2019-06-09 00:00:00.000 |
| 2019-06-10 00:00:00.000 |
| 2019-06-18 00:00:00.000 |
| 2019-07-09 00:00:00.000 |
| 2019-07-10 00:00:00.000 |
| 2019-07-14 00:00:00.000 |
| 2019-08-03 00:00:00.000 |
| 2019-08-09 00:00:00.000 |
| 2019-08-23 00:00:00.000 |
| 2019-08-30 00:00:00.000 |
| 2019-09-07 00:00:00.000 |
| 2019-09-21 00:00:00.000 |
| 2019-09-30 00:00:00.000 |
| 2019-10-13 00:00:00.000 |
| 2019-10-31 00:00:00.000 |
| 2019-11-12 00:00:00.000 |
| 2019-11-16 00:00:00.000 |
| 2019-11-19 00:00:00.000 |
| 2019-12-10 00:00:00.000 |
| 2019-12-14 00:00:00.000 |
| 2019-12-15 00:00:00.000 |
| 2019-12-25 00:00:00.000 |
| 2019-12-26 00:00:00.000 |
| 2019-12-27 00:00:00.000 |
| 2020-01-07 00:00:00.000 |
| 2020-01-10 00:00:00.000 |
| 2020-01-12 00:00:00.000 |
| 2020-01-16 00:00:00.000 |
| 2020-02-12 00:00:00.000 |
| 2020-02-14 00:00:00.000 |
| 2020-02-17 00:00:00.000 |
| 2020-02-22 00:00:00.000 |
| 2020-03-15 00:00:00.000 |
| 2020-03-20 00:00:00.000 |
| 2020-03-29 00:00:00.000 |
| 2020-04-05 00:00:00.000 |
| 2020-04-07 00:00:00.000 |
| 2020-04-14 00:00:00.000 |
| 2020-04-18 00:00:00.000 |
| 2020-04-22 00:00:00.000 |
| 2020-04-29 00:00:00.000 |
| 2020-05-01 00:00:00.000 |
| 2020-05-03 00:00:00.000 |
| 2020-06-02 00:00:00.000 |
| 2020-06-16 00:00:00.000 |
| 2020-06-19 00:00:00.000 |
| 2020-06-29 00:00:00.000 |
| 2020-07-01 00:00:00.000 |
| 2020-07-02 00:00:00.000 |
| 2020-07-26 00:00:00.000 |
| 2020-07-28 00:00:00.000 |
| 2020-07-29 00:00:00.000 |
| 2020-08-02 00:00:00.000 |
| 2020-08-08 00:00:00.000 |
| 2020-08-27 00:00:00.000 |
| 2020-09-01 00:00:00.000 |
| 2020-09-04 00:00:00.000 |
| 2020-09-09 00:00:00.000 |
| 2020-09-24 00:00:00.000 |
| 2020-10-21 00:00:00.000 |
| 2020-11-03 00:00:00.000 |
| 2020-11-18 00:00:00.000 |
| 2020-11-19 00:00:00.000 |
| 2020-11-25 00:00:00.000 |
| 2020-11-26 00:00:00.000 |
| 2020-12-12 00:00:00.000 |
| 2020-12-16 00:00:00.000 |
| 2020-12-28 00:00:00.000 |
| 2021-01-05 00:00:00.000 |
| 2021-01-12 00:00:00.000 |
| 2021-01-29 00:00:00.000 |
| 2019-01-01 00:00:00.000 |
| 2019-01-02 00:00:00.000 |
| 2019-01-07 00:00:00.000 |
| 2019-01-19 00:00:00.000 |
| 2019-01-28 00:00:00.000 |
| 2019-01-31 00:00:00.000 |
| 2019-02-06 00:00:00.000 |
| 2019-02-08 00:00:00.000 |
| 2019-02-16 00:00:00.000 |
| 2019-02-27 00:00:00.000 |
| 2019-03-17 00:00:00.000 |
| 2019-03-29 00:00:00.000 |
| 2019-04-01 00:00:00.000 |
| 2019-04-13 00:00:00.000 |
| 2019-04-26 00:00:00.000 |
| 2019-05-07 00:00:00.000 |
| 2019-05-10 00:00:00.000 |
| 2019-05-11 00:00:00.000 |
| 2019-05-24 00:00:00.000 |
| 2019-06-05 00:00:00.000 |
| 2019-07-19 00:00:00.000 |
| 2019-07-20 00:00:00.000 |
| 2019-07-27 00:00:00.000 |
| 2019-08-14 00:00:00.000 |
| 2019-08-26 00:00:00.000 |
| 2019-08-31 00:00:00.000 |
| 2019-09-01 00:00:00.000 |
| 2019-09-03 00:00:00.000 |
| 2019-09-05 00:00:00.000 |
| 2019-09-18 00:00:00.000 |
| 2019-09-19 00:00:00.000 |
| 2019-10-02 00:00:00.000 |
| 2019-10-29 00:00:00.000 |
| 2019-11-20 00:00:00.000 |
| 2019-11-30 00:00:00.000 |
| 2020-01-03 00:00:00.000 |
| 2020-01-09 00:00:00.000 |
| 2020-01-13 00:00:00.000 |
| 2020-01-24 00:00:00.000 |
| 2020-01-31 00:00:00.000 |
| 2020-02-08 00:00:00.000 |
| 2020-02-13 00:00:00.000 |
| 2020-02-16 00:00:00.000 |
| 2020-02-24 00:00:00.000 |
| 2020-03-01 00:00:00.000 |
| 2020-03-05 00:00:00.000 |
| 2020-03-11 00:00:00.000 |
| 2020-03-14 00:00:00.000 |
| 2020-03-28 00:00:00.000 |
| 2020-04-23 00:00:00.000 |
| 2020-05-04 00:00:00.000 |
| 2020-05-12 00:00:00.000 |
| 2020-05-27 00:00:00.000 |
| 2020-05-30 00:00:00.000 |
| 2020-06-11 00:00:00.000 |
| 2020-06-14 00:00:00.000 |
| 2020-06-18 00:00:00.000 |
| 2020-06-22 00:00:00.000 |
| 2020-07-22 00:00:00.000 |
| 2020-07-24 00:00:00.000 |
| 2020-08-05 00:00:00.000 |
| 2020-08-18 00:00:00.000 |
| 2020-09-08 00:00:00.000 |
| 2020-10-03 00:00:00.000 |
| 2020-10-06 00:00:00.000 |
| 2020-10-12 00:00:00.000 |
| 2020-10-30 00:00:00.000 |
| 2020-11-02 00:00:00.000 |
| 2020-11-04 00:00:00.000 |
| 2020-11-09 00:00:00.000 |
| 2021-01-20 00:00:00.000 |
| 2021-01-22 00:00:00.000 |
| 2021-01-23 00:00:00.000 |
| 2021-02-03 00:00:00.000 |
| 2019-01-05 00:00:00.000 |
| 2019-02-07 00:00:00.000 |
| 2019-02-21 00:00:00.000 |
| 2019-03-05 00:00:00.000 |
| 2019-03-12 00:00:00.000 |
| 2019-04-06 00:00:00.000 |
| 2019-05-05 00:00:00.000 |
| 2019-05-13 00:00:00.000 |
| 2019-05-30 00:00:00.000 |
| 2019-06-07 00:00:00.000 |
| 2019-06-17 00:00:00.000 |
| 2019-06-30 00:00:00.000 |
| 2019-07-03 00:00:00.000 |
| 2019-07-11 00:00:00.000 |
| 2019-07-13 00:00:00.000 |
| 2019-07-22 00:00:00.000 |
| 2019-07-25 00:00:00.000 |
| 2019-07-31 00:00:00.000 |
| 2019-08-01 00:00:00.000 |
| 2019-08-10 00:00:00.000 |
| 2019-09-17 00:00:00.000 |
| 2019-09-22 00:00:00.000 |
| 2019-10-10 00:00:00.000 |
| 2019-10-18 00:00:00.000 |
| 2019-10-22 00:00:00.000 |
| 2019-11-04 00:00:00.000 |
| 2019-11-08 00:00:00.000 |
| 2019-11-10 00:00:00.000 |
| 2019-12-07 00:00:00.000 |
| 2019-12-09 00:00:00.000 |
| 2020-01-11 00:00:00.000 |
| 2020-01-19 00:00:00.000 |
| 2020-01-26 00:00:00.000 |
| 2020-02-03 00:00:00.000 |
| 2020-02-07 00:00:00.000 |
| 2020-02-10 00:00:00.000 |
| 2020-03-06 00:00:00.000 |
| 2020-03-13 00:00:00.000 |
| 2020-03-30 00:00:00.000 |
| 2020-04-16 00:00:00.000 |
| 2020-04-30 00:00:00.000 |
| 2020-05-09 00:00:00.000 |
| 2020-05-11 00:00:00.000 |
| 2020-05-17 00:00:00.000 |
| 2020-06-05 00:00:00.000 |
| 2020-07-12 00:00:00.000 |
| 2020-07-19 00:00:00.000 |
| 2020-07-30 00:00:00.000 |
| 2020-08-13 00:00:00.000 |
| 2020-08-14 00:00:00.000 |
| 2020-08-21 00:00:00.000 |
| 2020-08-31 00:00:00.000 |
| 2020-09-10 00:00:00.000 |
| 2020-10-22 00:00:00.000 |
| 2020-12-06 00:00:00.000 |
| 2020-12-09 00:00:00.000 |
| 2020-12-15 00:00:00.000 |
| 2021-01-14 00:00:00.000 |
| 2021-01-16 00:00:00.000 |
| 2021-01-21 00:00:00.000 |
| 2021-01-24 00:00:00.000 |
| 2021-01-27 00:00:00.000 |
| 2021-01-28 00:00:00.000 |
| 2019-01-15 00:00:00.000 |
| 2019-02-09 00:00:00.000 |
| 2019-03-01 00:00:00.000 |
| 2019-03-11 00:00:00.000 |
| 2019-03-21 00:00:00.000 |
| 2019-03-23 00:00:00.000 |
| 2019-03-25 00:00:00.000 |
| 2019-04-08 00:00:00.000 |
| 2019-04-12 00:00:00.000 |
| 2019-04-14 00:00:00.000 |
| 2019-04-16 00:00:00.000 |
| 2019-04-24 00:00:00.000 |
| 2019-05-06 00:00:00.000 |
| 2019-06-24 00:00:00.000 |
| 2019-06-25 00:00:00.000 |
| 2019-07-07 00:00:00.000 |
| 2019-07-29 00:00:00.000 |
| 2019-08-04 00:00:00.000 |
| 2019-09-15 00:00:00.000 |
| 2019-10-03 00:00:00.000 |
| 2019-10-21 00:00:00.000 |
| 2019-12-01 00:00:00.000 |
| 2019-12-31 00:00:00.000 |
| 2020-01-01 00:00:00.000 |
| 2020-01-06 00:00:00.000 |
| 2020-03-19 00:00:00.000 |
| 2020-03-27 00:00:00.000 |
| 2020-04-24 00:00:00.000 |
| 2020-05-06 00:00:00.000 |
| 2020-05-07 00:00:00.000 |
| 2020-05-15 00:00:00.000 |
| 2020-06-12 00:00:00.000 |
| 2020-06-23 00:00:00.000 |
| 2020-07-18 00:00:00.000 |
| 2020-07-20 00:00:00.000 |
| 2020-08-01 00:00:00.000 |
| 2020-08-16 00:00:00.000 |
| 2020-08-23 00:00:00.000 |
| 2020-10-05 00:00:00.000 |
| 2020-10-09 00:00:00.000 |
| 2020-10-11 00:00:00.000 |
| 2020-10-29 00:00:00.000 |
| 2020-11-05 00:00:00.000 |
| 2020-11-21 00:00:00.000 |
| 2020-12-14 00:00:00.000 |
| 2020-12-20 00:00:00.000 |