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:
| fullname            |
|:--------------------|
| roldán borrell      |
| ileana gargallo     |
| felicidad pellicer  |
| mariano arrieta     |
| azahar cañizares    |
| josé mari casals    |
| ale sanz            |
| vilma cerezo        |
| galo meléndez       |
| coral serra         |
| tito mayol          |
| amílcar peña        |
| leoncio nogués      |
| dora feijoo         |
| sergio tejera       |
| azucena vallés      |
| saturnina olmo      |
| florina navas       |
| marcos rios         |
| baltasar ramirez    |
| débora arjona       |
| jose carlos macias  |
| pastor belmonte     |
| joan mateo          |
| luís iglesia        |
| mónica ojeda        |
| melania ferrándiz   |
| juan pablo quero    |
| josep ramón         |
| otilia cámara       |
| blanca lillo        |
| ester julián        |
| edgardo herrera     |
| mamen ordóñez       |
| nadia abella        |
| hernán carretero    |
| mónica campillo     |
| rufino paniagua     |
| candela palma       |
| mar company         |
| elisabet dávila     |
| leire lamas         |
| asdrubal roda       |
| apolinar jaén       |
| luciano vallés      |
| natanael quintana   |
| etelvina cadenas    |
| gaspar llorens      |
| edelmira daza       |
| olegario berenguer  |
| gilberto flor       |
| goyo león           |
| amarilis sanz       |
| verónica yuste      |
| luna expósito       |
| lina camps          |
| francisca pons      |
| maría dolores saura |
| inmaculada alfaro   |
| vicenta portero     |
| oriana salamanca    |
| noelia grau         |
| guiomar girona      |
| fermín ramirez      |
| eva maría domínguez |
| concepción palacios |
| ofelia guerra       |
| mauricio arana      |
| natalia agullo      |
| pilar marcos        |
| jordi nogueira      |
| guadalupe bertrán   |
| reynaldo ávila      |
| dorita prieto       |
| viviana colomer     |
| josé antonio comas  |
| sarita montoya      |
| alejo torralba      |
| lina romeu          |
| florentino carpio   |
| olegario farré      |
| estrella hernando   |
| gregorio luque      |
| raúl sales          |
| clotilde mariscal   |
| segismundo vázquez  |
| martín chaves       |
| constanza amores    |
| alicia pereira      |
| juliana nicolás     |
| nerea rey           |
| sosimo benavides    |
| haydée requena      |
| ariadna chico       |
| úrsula canals       |
| ascensión camino    |