Task: Error-Detect (source dataset: Spreadsheet-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:
| sub sector of assistance                             |
|:-----------------------------------------------------|
| semi-permanent household latrine construction        |
| deep tube well construction / rehabilitation         |
| water quality testing                                |
| community hygiene promotion sessions (group)         |
| hygiene promotion capacity                           |
| community hygiene promotion sessions (hh)            |
| other (please specify in notes column)               |
| bio-gas plant construction                           |
| construction of bathing facilities                   |
| dislodging  of latrines                              |
| emergency latrine construction                       |
| semi-permanent communal (block) latrine construction |
| waste pit construction                               |
| water trucking                                       |
| distribution of hygiene top-up kits                  |
| decommissioning of latrines                          |
| distribution of hygiene kits                         |
| distribution of jerry cans / buckets                 |
| household water treatment (aquatabs)                 |
| shallow tube well construction / rehabilitation      |
| submersible pump & distribution system               |
| latrines repair/maintenance                          |
| solid waste collection                               |
| surface water production & distribution system       |
| construction of handwashing facilities               |
| fsm - constructed wetland                            |
| fsm - up-flow filtration                             |
| waste bins provision                                 |
| ring-well construction / rehabilitation              |
| fsm - lime stabilization                             |
| tube-wells repair/maintenance                        |
| household water treatment (ultra-filtration device)  |
| disabled friendly latrines                           |
| fsm - biological treatment                           |
| distribution of hygeine items voucher                |
| decommissioning of tube-wells                        |
| pipeline system                                      |
| spring catchment & distribution system               |
| decommissioning of solid waste pit construction      |
| bio-gas latrine construction                         |


label: distribution of hygeine items voucher