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:
| contract no.                                      |
|:--------------------------------------------------|
| b50005237                                         |
| b50005238                                         |
| b50002613                                         |
| b50003343                                         |
| b50004853                                         |
| b50003298                                         |
| b50003292                                         |
| b50004499                                         |
| b50004017                                         |
| 06000                                             |
| b50003446                                         |
| b50004085                                         |
| b50002318                                         |
| b50004162                                         |
| 05000                                             |
| b50003719                                         |
| b50003683                                         |
| b50004714                                         |
| b50004803                                         |
| b50005199                                         |
| b50003835                                         |
| b50003266                                         |
| b50005179                                         |
| b50004977                                         |
| b50003559                                         |
| b50002320                                         |
| b50004841                                         |
| b50005012                                         |
| b50005017                                         |
| b50005206                                         |
| b50001944                                         |
| b50003941                                         |
| b50003833                                         |
| b50004506                                         |
| b50004509                                         |
| b50002273                                         |
| b50004553                                         |
| b50004105                                         |
| b50004010                                         |
| b50004035                                         |
| b50004608                                         |
| b50004661                                         |
| b50004884                                         |
| b50005087                                         |
| b50003063                                         |
| b50004628                                         |
| b50004370                                         |
| b50004161                                         |
| b50003845                                         |
| b50004823                                         |
| b50004022                                         |
| b50003843                                         |
| b50003698                                         |
| b50002616                                         |
| b50004718                                         |
| b50004887                                         |
| b50004516                                         |
| b50003300                                         |
| b50002896                                         |
| b50003075                                         |
| b50003752                                         |
| b50003860                                         |
| b50004885                                         |
| 07000                                             |
| b50003586                                         |
| b50003210                                         |
| b52224988                                         |
| b50003997                                         |
| b50002837                                         |
| b50004944                                         |
| b50001080                                         |
| b50004083                                         |
| b50004532                                         |
| b50002931                                         |
| b50004075                                         |
| b50004135                                         |
| b50002948                                         |
| b50004091                                         |
| b50004817                                         |
| b50002845                                         |
| b50004346                                         |
| b50003940                                         |
| b50004652                                         |
| 060b2490024                                       |
| b50001050                                         |
| b50004813                                         |
| b50004268                                         |
| b50004090                                         |
| b50004836                                         |
| b50001514                                         |
| b50001415                                         |
| b50003911                                         |
| b50004584                                         |
| b50004659                                         |
| b50003659                                         |
| b50004167                                         |
| b50004386                                         |
| b50004390                                         |
| b50005058                                         |
| b50004947                                         |
| b50005316                                         |
| b50005320                                         |
| md state contract# 050b2400001                    |
| maryland state contract number 050b7800015        |
| b50003055                                         |
| b50003158                                         |
| b50004444                                         |
| b50004784                                         |
| b50005223                                         |
| b50005216                                         |
| b50005182                                         |
| b50005186                                         |
| b50005284                                         |
| b50004802                                         |
| b50005185                                         |
| b50005184                                         |
| b50005011                                         |
| b50002515                                         |
| b50004727                                         |
| b50002819                                         |
| b50002789                                         |
| b50002794                                         |
| b50003291                                         |
| b50002871                                         |
| b50002758                                         |
| b50002781                                         |
| b50004929                                         |
| b50005221                                         |
| b50004876                                         |
| b50003552                                         |
| b50003557                                         |
| b50005035                                         |
| b50005061                                         |
| b50005034                                         |
| b50005026                                         |
| houston -galveston am10-16                        |
| b50004053                                         |
| b50001979                                         |
| b50005110                                         |
| b50003751                                         |
| b50005139                                         |
| b50005141                                         |
| b50005140                                         |
| b50003788                                         |
| b50005170                                         |
| b50004531                                         |
| b50005025                                         |
| b50004602                                         |
| b50004600                                         |
| b50004990                                         |
| b50001251                                         |
| b50000817                                         |
| njpa013006 (national joint powers alliance co-op) |
| b50003192                                         |
| b50002697                                         |
| b50003895                                         |
| b50002917                                         |
| b50004504                                         |
| b50003190                                         |
| b50004619                                         |
| b50003304                                         |
| b50003503                                         |
| b50004640                                         |
| b50003322                                         |
| 16cm-097 (brcpc)                                  |
| b50004710                                         |
| b50003351                                         |
| b50002313                                         |
| b50003904                                         |
| b50004069                                         |
| balto couty bc2057085                             |
| bp-07196                                          |
| b50002898                                         |
| b50002905                                         |
| b50004535                                         |
| b50001347                                         |
| b50001886                                         |
| b50003161                                         |
| b50004496                                         |
| b50000757                                         |
| b50001175                                         |
| b50003696                                         |
| b50003935                                         |
| b50004949                                         |
| bp-4890                                           |
| b50004890                                         |
| bp-4907                                           |
| bp-07105                                          |
| b50002463                                         |
| b50003880                                         |
| b50003894                                         |
| b50005230                                         |
| b50003284                                         |
| b50004995                                         |
| b50004957                                         |
| b50002825                                         |
| b50002841                                         |
| b50002737                                         |
| b50004467                                         |
| b50004554                                         |
| b50004060                                         |
| b50005022                                         |
| b50003404                                         |
| b50004778                                         |
| b50004777                                         |
| b50004776                                         |
| b50003464                                         |
| b50004704                                         |
| b50004811                                         |
| b50005159                                         |
| b50004657                                         |
| b50003851                                         |
| b50004259                                         |
| b50003866                                         |
| b50004200                                         |
| b50004202                                         |
| b50004094                                         |
| b50005168                                         |
| md001b3400005                                     |
| b50004352                                         |
| b50002166                                         |
| b50004963                                         |
| b50005150                                         |
| b50004822                                         |
| b50005149                                         |
| b50004050                                         |
| b50004665                                         |
| b50004385                                         |
| b50005282                                         |
| b50004428                                         |
| b50002695                                         |
| b50003889                                         |
| b50002730                                         |
| b50004842                                         |
| b50004431                                         |
| b50004464                                         |
| b50004864                                         |
| b50003958                                         |
| b50003162                                         |
| b50001868                                         |
| b50003315                                         |
| b50002151                                         |
| b50003324                                         |
| b50003979                                         |
| b50002139                                         |
| b50003950                                         |
| b50003274                                         |
| b50004013                                         |
| b50003918                                         |
| b50003352                                         |
| b50004046                                         |
| b50002874                                         |
| b50004455                                         |
| b50004082                                         |
| b50004599                                         |
| b50005039                                         |
| b50004072                                         |
| b50005047                                         |
| b50004550                                         |
| b50003612                                         |
| b50004568                                         |
| b50005111                                         |
| b50005112                                         |
| b50003046                                         |
| b50002461                                         |
| b50003047                                         |
| b50002883                                         |
| b50004321                                         |
| b50003897                                         |
| balto cty #1540                                   |
| b50004989                                         |
| b50005060                                         |
| md state                                          |
| b50004654                                         |
| b50004705                                         |
| b50005157                                         |
| b50005146                                         |
| b50004896                                         |
| b50004394                                         |
| 06000 - lease                                     |
| b50005154                                         |
| b50004415                                         |
| b50004177                                         |
| b50005151                                         |
| b50003802                                         |
| b50004421                                         |
| b50004471                                         |
| b50003223                                         |
| b50003217                                         |
| b50002712                                         |
| b50003919                                         |
| b50004900                                         |
| b50003879                                         |
| b50004915                                         |
| b50004914                                         |
| b50002397                                         |
| 001b6400497                                       |
| b50004356                                         |
| b50003473                                         |
| b50003826                                         |
| b50003451                                         |
| b50004093                                         |
| b50003154                                         |
| b50004055                                         |
| b50002878                                         |
| b50005013                                         |
| b50004006                                         |
| b50003519                                         |
| b50002385                                         |
| b50003627                                         |
| b50004126                                         |
| brcpc #p-146                                      |
| b50005095                                         |
| b50002251                                         |
| b50003771                                         |
| b50004684                                         |
| b50003108                                         |
| b50003071                                         |
| b50004158                                         |
| b50003575                                         |
| b50004750                                         |
| b50004707                                         |
| b50003742                                         |
| b50003116                                         |
| b50004271                                         |
| b50004365                                         |
| b50004279                                         |
| b50002089                                         |
| b50004397                                         |
| b50004826                                         |
| b50004618                                         |
| b50004491                                         |
| b50004551                                         |
| 001b6400532                                       |
| b50004508                                         |
| b50004722                                         |
| b50003617                                         |
| b50003558                                         |
| b50004930                                         |
| b50004910                                         |
| b50004909                                         |
| b50004951                                         |
| dgs-07-epc-iodc-7.0 state                         |
| b50004096                                         |
| b50004211                                         |
| b50004357                                         |
| b50005007                                         |
| b50004686                                         |
| b50003093                                         |
| b50004150                                         |
| b50004505                                         |
| b50004838                                         |
| b5000524                                          |
| b50005300                                         |
| b50005270                                         |
| b50005329                                         |
| b50003311                                         |
| b50004808                                         |
| b50002775                                         |
| b50002834                                         |
| b50003375                                         |
| b50003977                                         |
| b50003959                                         |
| b50003366                                         |
| b50003397                                         |
| b50003321                                         |
| b50003973                                         |
| b50003281                                         |
| b50003329                                         |
| b50004086                                         |
| b50003414                                         |
| b50003396                                         |
| b50003355                                         |
| b50003514                                         |
| b50004073                                         |
| b50003483                                         |
| b50003448                                         |
| b50003447                                         |
| b50003574                                         |
| b50003573                                         |
| b50003570                                         |
| b50003547                                         |
| b50003554                                         |
| b50003731                                         |
| b50003730                                         |
| b50003697                                         |
| b50003745                                         |
| b50003226                                         |
| b50003609                                         |
| b50003871                                         |
| b50004351                                         |
| b50004299                                         |
| b50004969                                         |
| b50004594                                         |
| b50004548                                         |
| b50004552                                         |
| b50004801                                         |
| b50004709                                         |
| b50004845                                         |
| b50004770                                         |
| b50004936                                         |
| b50005001                                         |
| b50005069                                         |
| b50005068                                         |
| b50005165                                         |
| b50005143                                         |
| b50005301                                         |
| b50004598                                         |
| b50003790                                         |
| b50005254                                         |
| b50005008                                         |
| b50004401                                         |
| b50003820                                         |
| b50003499                                         |
| b50003333                                         |
| b50004492                                         |
| b50003279                                         |
| b50004257                                         |
| b50004923                                         |
| b50002849                                         |
| b50003256                                         |
| b50003481                                         |
| b50004973                                         |
| b50003873                                         |
| b50004660                                         |
| bp-06059                                          |
| b50004643                                         |
| b50004153                                         |
| b50005134                                         |
| b50004682                                         |
| b50004207                                         |
| b50004256                                         |
| b50003692                                         |
| b50004276                                         |
| b50004495                                         |
| b50004383                                         |
| b50004301                                         |
| b50004338                                         |
| b50004410                                         |
| b50004493                                         |
| b50004866                                         |
| b50004360                                         |
| b50004364                                         |
| b50004417                                         |
| b50004524                                         |
| b50004443                                         |
| b50004645                                         |
| b50004669                                         |
| b50004664                                         |
| b50004724                                         |
| b50005083                                         |
| b50004815                                         |
| b50004633                                         |
| b50004902                                         |
| b50004958                                         |
| b50004828                                         |
| b50004831                                         |
| 0800                                              |
| b50003722                                         |
| b50004406                                         |
| b50004435                                         |
| b50005128                                         |
| b50005188                                         |
| b50004799                                         |
| b50004193                                         |
| b50002877                                         |
| b50000482                                         |
| b50002762                                         |
| b50003308                                         |
| b50003899                                         |
| b50002727                                         |
| b50003258                                         |
| b50003896                                         |
| b50003295                                         |
| b50003280                                         |
| b50004438                                         |
| b50004408                                         |
| b50002739                                         |
| b50004446                                         |
| b50003289                                         |
| b50004450                                         |
| b50004414                                         |
| b50004399                                         |
| b50003927                                         |
| b50002694                                         |
| b50002768                                         |
| b50003962                                         |
| b50004849                                         |
| b50003259                                         |
| b50002466                                         |
| b50004933                                         |
| b50004534                                         |
| b50002679                                         |
| b50004982                                         |
| b50004939                                         |
| b50004500                                         |
| b50002858                                         |
| b50004514                                         |
| b50004582                                         |
| b50003589                                         |
| brcpc 15-021                                      |
| 09-120 (anne arundel county)                      |
| b50004163                                         |
| b50004593                                         |
| b50003548                                         |
| b50003531                                         |
| bp-07136                                          |
| b50004656                                         |
| b50003642                                         |
| b50004627                                         |
| b50002985                                         |
| b50004190                                         |
| b50004685                                         |
| b50004056                                         |
| b50004680                                         |
| b50005072                                         |
| b50002736                                         |
| b50005115                                         |
| b50004145                                         |
| b50004746                                         |
| b50004699                                         |
| b50004208                                         |
| b50003714                                         |
| b50005114                                         |
| b50003786                                         |
| b50003687                                         |
| b50002625                                         |
| b50003713                                         |
| b50004267                                         |
| #6369 (wssc)                                      |
| b50004195                                         |
| b50003757                                         |
| b50004772                                         |
| b50004779                                         |
| b50004332                                         |
| b50004825                                         |
| b50003774                                         |
| b50004679                                         |
| b50003241                                         |
| b50003236                                         |
| b50004287                                         |
| b50002161                                         |
| b50003985                                         |
| b50004833                                         |
| b50004830                                         |
| b50004560                                         |
| b50003484                                         |
| b50005113                                         |
| b50005156                                         |
| b50004741                                         |
| b50004809                                         |
| b50004839                                         |
| b50003305                                         |
| b50004854                                         |
| b50001328                                         |
| b50004917                                         |
| b50004918                                         |
| b50004932                                         |
| b50004670                                         |
| b50001020                                         |
| b50004671                                         |
| b50003294                                         |
| b50003778                                         |
| b50004966                                         |
| b50002380                                         |
| b50002714                                         |
| b50004355                                         |
| b50003952                                         |
| b50002856                                         |
| b50003386                                         |
| wwg-njpa                                          |
| b50003065                                         |
| b50004067                                         |
| b50002394                                         |
| b50003818                                         |
| b50000692                                         |
| b50004810                                         |
| b50003831                                         |
| #141003                                           |
| b50002453                                         |
| b50003712                                         |
| b50004662                                         |
| b50004606                                         |
| b50004074                                         |
| b50003989                                         |
| b50004701                                         |