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                                        |
|:--------------------------------------------------|
| asbestos (2524)                                   |
| ash and residues (2620)                           |
| bitumen and asphalt (2714)                        |
| bituminous mixtures (2715)                        |
| chalk (2509)                                      |
| chromium (2610)                                   |
| coal (2701)                                       |
| coal gas (2705)                                   |
| cobalt (2605)                                     |
| coke and semi-coke (2704)                         |
| copper (2603)                                     |
| crude oil (2709)                                  |
| diamonds (7102)                                   |
| dolomite (2518)                                   |
| electrical energy (2716)                          |
| felspar (2529)                                    |
| gold (7108)                                       |
| granite (2516)                                    |
| granulated slag (2618)                            |
| gypsum (2520)                                     |
| iron (2601)                                       |
| iron pyrites (2502)                               |
| kaolin (2507)                                     |
| lead (2607)                                       |
| lignite (2702)                                    |
| limestone (2521)                                  |
| manganese (2602)                                  |
| marble (2515)                                     |
| mica (2525)                                       |
| mineral substances not elsewhere specified (2530) |
| molybdenum (2613)                                 |
| natural barium sulphate (2511)                    |
| natural borates and concentrates (2528)           |
| natural calcium phosphates (2510)                 |
| natural cryolite (2527)                           |
| natural gas (2711)                                |
| natural graphite (2504)                           |
| natural magnesium carbonate (2519)                |
| natural sands (2505)                              |
| natural steatite (2526)                           |
| nickel (2604)                                     |
| niobium (2615)                                    |
| other (2617)                                      |
| other clays (2508)                                |
| other slag and ash (2621)                         |
| peat (2703)                                       |
| pebbles (2517)                                    |
| petroleum coke (2713)                             |
| petroleum jelly (2712)                            |
| petroleum oils excluding crude (2710)             |
| pitch and pitch coke (2708)                       |
| portland cement (2523)                            |
| precious metals (2616)                            |
| products of the distillation of coal tar (2707)   |
| pumice stone (2513)                               |
| quartz (2506)                                     |
| quicklime (2522)                                  |
| salt and pure sodium chloride (2501)              |
| siliceous fossil meals (2512)                     |
| silver (7106)                                     |
| slag (2619)                                       |
| slate (2514)                                      |
| sulphur of all kinds (2503)                       |
| tar distilled from coal (2706)                    |
| tin (2609)                                        |
| titanium (2614)                                   |
| tungsten (2611)                                   |