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:
| municipality   |
|:---------------|
| city6          |
| city7          |
| city8          |
| city9          |
| city12         |
| city13         |
| city16         |
| city17         |
| city18         |
| city21         |
| city22         |
| city24         |
| city27         |
| city29         |
| city31         |
| city35         |
| city36         |
| city43         |
| city44         |
| city45         |
| city46         |
| city47         |
| city48         |
| city51         |
| city52         |
| city53         |
| city58         |
| city59         |
| city61         |
| city62         |
| city63         |
| city64         |
| city65         |
| city68         |
| city69         |
| city71         |
| city72         |
| city73         |
| city74         |
| city75         |
| city76         |
| city78         |
| city79         |
| city81         |
| city82         |
| city85         |
| city86         |
| city87         |
| city94         |
| city98         |
| city111        |
| city113        |
| city114        |
| city116        |
| city118        |
| city119        |
| city122        |
| city123        |
| city124        |
| city125        |
| city127        |
| city129        |
| city134        |
| city135        |
| city137        |
| city138        |
| city139        |
| city143        |
| city144        |
| city145        |
| city156        |
| city157        |
| city161        |
| city162        |
| city164        |
| city165        |
| city167        |
| city168        |
| city169        |
| city171        |
| city175        |
| city176        |
| city178        |
| city179        |
| city181        |
| city184        |
| city186        |
| city187        |
| city189        |
| city191        |
| city194        |
| city195        |
| city196        |
| city213        |
| city215        |
| city216        |
| city217        |
| city223        |
| city225        |
| city229        |
| city234        |
| city235        |
| city236        |
| city237        |
| city239        |
| city241        |
| city242        |
| city243        |
| city244        |
| city247        |
| city248        |
| city252        |
| city255        |
| city256        |
| city262        |
| city268        |
| city269        |
| city272        |
| city275        |
| city277        |
| city283        |
| city285        |
| city287        |
| city294        |
| city295        |
| city297        |
| city298        |
| city318        |
| city322        |
| city323        |
| city325        |
| city327        |
| city331        |
| city334        |
| city335        |
| city336        |
| city338        |
| city342        |
| city346        |
| city351        |
| city363        |
| city365        |
| city366        |
| city368        |
| city371        |
| city372        |
| city373        |
| city378        |
| city379        |
| city384        |
| city388        |
| city389        |
| city393        |
| city394        |
| city399        |
| city414        |
| city415        |
| city416        |
| city417        |
| city422        |
| city423        |
| city424        |
| city427        |
| city428        |
| city429        |
| city433        |
| city439        |
| city445        |
| city446        |
| city447        |
| city454        |
| city455        |
| city458        |
| city462        |
| city463        |
| city465        |
| city471        |
| city472        |
| city475        |
| city484        |
| city485        |
| city488        |
| city512        |
| city514        |
| city515        |
| city516        |
| city517        |
| city519        |
| city534        |
| city535        |
| city536        |
| city537        |
| city538        |
| city539        |
| city541        |
| city542        |
| city543        |
| city544        |
| city545        |
| city546        |
| city547        |
| city548        |
| city549        |
| city551        |
| city552        |
| city553        |
| city554        |
| city555        |
| city556        |
| city557        |
| city558        |
| city559        |
| city561        |
| city562        |
| city563        |
| city564        |
| city565        |
| city566        |
| city567        |
| city568        |
| city569        |
| city571        |
| city572        |
| city573        |
| city574        |
| city575        |
| city576        |
| city577        |
| city578        |
| city579        |
| city581        |
| city582        |
| city583        |
| city584        |
| city585        |
| city586        |
| city587        |
| city588        |
| city589        |
| city592        |
| city593        |
| city591        |
| city594        |
| city595        |
| city596        |
| city597        |
| city598        |
| city599        |
| city1          |
| city15         |
| city25         |
| city28         |
| city37         |
| city42         |
| city54         |
| city66         |
| city83         |
| city88         |
| city117        |
| city141        |
| city142        |
| city147        |
| city152        |
| city173        |
| city182        |
| city185        |
| city193        |
| city214        |
| city219        |
| city221        |
| city222        |
| city224        |
| city228        |
| city232        |
| city238        |
| city251        |
| city261        |
| city263        |
| city282        |
| city284        |
| city289        |
| city291        |
| city292        |
| city313        |
| city314        |
| city315        |
| city316        |
| city317        |
| city319        |
| city324        |
| city328        |
| city332        |
| city333        |
| city343        |
| city344        |
| city348        |
| city358        |
| city361        |
| city385        |
| city386        |
| city398        |
| city413        |
| city418        |
| city419        |
| city421        |
| city426        |
| city432        |
| city434        |
| city435        |
| city453        |
| city456        |
| city464        |
| city469        |
| city478        |
| city481        |
| city483        |
| city486        |
| city489        |
| city492        |
| city493        |
| city497        |
| city498        |
| city2          |
| city11         |
| city14         |
| city19         |
| city23         |
| city26         |
| city32         |
| city38         |
| city55         |
| city56         |
| city92         |
| city93         |
| city96         |
| city115        |
| city126        |
| city131        |
| city148        |
| city151        |
| city153        |
| city154        |
| city159        |
| city177        |
| city197        |
| city198        |
| city199        |
| city211        |
| city218        |
| city233        |
| city246        |
| city259        |
| city264        |
| city267        |
| city274        |
| city276        |
| city286        |
| city296        |
| city311        |
| city321        |
| city339        |
| city345        |
| city347        |
| city349        |
| city354        |
| city355        |
| city359        |
| city362        |
| city387        |
| city392        |
| city396        |
| city397        |
| city412        |
| city431        |
| city441        |
| city452        |
| city461        |
| city467        |
| city473        |
| city479        |
| city491        |
| city494        |
| city495        |
| city496        |
| city499        |
| city4          |
| city33         |
| city34         |
| city39         |
| city41         |
| city49         |
| city57         |
| city67         |
| city77         |
| city84         |
| city89         |
| city91         |
| city95         |
| city97         |
| city99         |
| city112        |
| city121        |
| city128        |
| city132        |
| city133        |
| city136        |
| city146        |
| city149        |
| city155        |
| city158        |
| city163        |
| city166        |
| city172        |
| city174        |
| city183        |
| city188        |
| city192        |
| city212        |
| city226        |
| city227        |
| city231        |
| city245        |
| city249        |
| city253        |
| city254        |
| city257        |
| city258        |
| city265        |
| city266        |
| city271        |
| city273        |
| city278        |
| city279        |
| city281        |
| city288        |
| city293        |
| city299        |
| city312        |
| city326        |
| city329        |
| city337        |
| city341        |
| city352        |
| city353        |
| city356        |
| city357        |
| city364        |
| city367        |
| city369        |
| city374        |
| city375        |
| city376        |
| city377        |
| city381        |
| city382        |
| city383        |
| city391        |
| city395        |
| city411        |
| city425        |
| city436        |
| city437        |
| city438        |
| city442        |
| city443        |
| city444        |
| city448        |
| city449        |
| city451        |
| city457        |
| city459        |
| city466        |
| city468        |
| city474        |
| city476        |
| city477        |
| city482        |
| city487        |
| city511        |
| city513        |
| city518        |
| city521        |
| city522        |
| city523        |
| city524        |
| city525        |
| city526        |
| city527        |
| city528        |
| city529        |
| city531        |