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:
| Unnamed: 0                                                                                                        |
|:------------------------------------------------------------------------------------------------------------------|
| global urban bicycle                                                                                              |
| global urban motorbike with internal combustion engine                                                            |
| global urban motorbike with electric engine                                                                       |
| global urban four wheeled car with internal combustion engine based on liquid fossil fuels                        |
| global urban four wheeled car with internal combustion engine based on gas                                        |
| global urban four wheeled car with plug-in hybrid technology (electric and internal combustion)                   |
| global urban four wheeled car with electric engine                                                                |
| global urban four wheeled car with hydrogen engine                                                                |
| global urban bus with internal combustion engine based on liquid fossil fuels                                     |
| global urban bus with internal combustion engine based on gas                                                     |
| global urban bus with plug-in hybrid technology (electric and internal combustion)                                |
| global urban bus with electric engine                                                                             |
| global urban bus with hydrogen engine                                                                             |
| global urban train with non-electric power                                                                        |
| global urban train with electric power                                                                            |
| global rural walking                                                                                              |
| global rural bicycle                                                                                              |
| global rural motorbike with internal combustion engine                                                            |
| global rural motorbike with electric engine                                                                       |
| global rural four wheeled car with internal combustion engine based on liquid fossil fuels                        |
| global rural four wheeled car with internal combustion engine based on gas                                        |
| global rural four wheeled car with plug-in hybrid technology (electric and internal combustion)                   |
| global rural four wheeled car with electric engine                                                                |
| global rural four wheeled car with hydrogen engine                                                                |
| global rural bus with internal combustion engine based on liquid fossil fuels                                     |
| global rural bus with internal combustion engine based on gas                                                     |
| global rural bus with plug-in hybrid technology (electric and internal combustion)                                |
| global rural bus with electric engine                                                                             |
| global rural bus with hydrogen engine                                                                             |
| global rural train with non-electric power                                                                        |
| global rural train with electric power                                                                            |
| global international passenger plane short haul with traditional engine                                           |
| global international passenger plane short haul with hydrogen power                                               |
| global international passenger plane long haul with traditional engine                                            |
| global international passenger plane long haul with hydrogen power                                                |
| global international passenger train with non electric power                                                      |
| global international passenger train with electric power                                                          |
| global domestic light freight truck with internal combustion engine based on liquid fossil fuels                  |
| global domestic light freight truck with internal combustion engine based on gas                                  |
| global domestic light freight truck with plug-in hybrid technology (internal combustion engine and electric)      |
| global domestic light freight truck with electric engine                                                          |
| global domestic light freight truck with hydrogen engine                                                          |
| global domestic heavy freight truck with internal combustion engine based on liquid fossil fuels                  |
| global domestic heavy freight truck with internal combustion engine based on gas                                  |
| global domestic heavy freight truck with plug-in hybrid technology (internal combustion engine and electric)      |
| global domestic heavy freight truck with electric engine                                                          |
| global domestic heavy freight truck with hydrogen engine                                                          |
| global domestic freight train with non-electric power                                                             |
| global domestic freight train with electric power                                                                 |
| global domestic freight ship with traditional engine                                                              |
| global domestic freight ship with hydrogen engine                                                                 |
| global international heavy freight truck with internal combustion engine based on liquid fossil fuels             |
| global international heavy freight truck with internal combustion engine based on gas                             |
| global international heavy freight truck with plug-in hybrid technology (internal combustion engine and electric) |
| global international heavy freight truck with electric engine                                                     |
| global international heavy freight truck with hydrogen engine                                                     |
| global international freight train with non electric power                                                        |
| global international freight train with electric power                                                            |
| global international freight ship with traditional engine                                                         |
| global international freight ship with hydrogen power                                                             |