Task: Schema-Matching (source dataset: prospect)

Task: 
Please identify the matching columns between Table A and Table B. For each column in Table A, specify the corresponding column in Table B. If a column in A has no corresponding column in Table B, you can map it to null. Represent each column mapping using a pair of column headers in a list, i.e., [Table A Column, Table B column or null]. Provide the mapping for each column in Table A and return all mappings in a list.

No explanation and return the matching columns in a structured JSON format: {"column_mappings": <a list of column pairs>}.

TableA:
| AgencyID   | FirstName   | NumberCreditCards   | PostalCode   |    NetWorth | Age   | LastName   | AddressLine1       | NumberCars   | MiddleInitial   | Country               | Gender   | CreditRating   | OwnOrRentFlag   | City          | AddressLine2   | State                | Phone          |
|:-----------|:------------|:--------------------|:-------------|------------:|:------|:-----------|:-------------------|:-------------|:----------------|:----------------------|:---------|:---------------|:----------------|:--------------|:---------------|:---------------------|:---------------|
| PEL0       | hetti       |                     | T6bwi1       | 1.14156e+06 | 12.0  | PsLLAND    | 2184uolympiasgr4et |              |                 | Uniteddtat3sifAmerkca | f        | 404.0          | O               | Fakrbanks     |                | MA                   | 1-712-522-6088 |
| LED1       | hRUDY       | 9.0                 | 77281        | 2.32567e+06 | 37.0  | oEDUC      | 245congrdssc0ugt   | 1.0          |                 | Unit2dStatfsofAme3kca | F        | 663.0          | U               | Qurbec        | APT. 624       | PA                   | 1-626-426-4298 |
| lat2       | irelanc     | 13.0                | 91355        | 1.59712e+06 |       | latic      | 6517fraio8ngwext   | 0.0          |                 | UmktedSta5edofAmerica |          | 562.0          | O               | Henderzon     |                | Alberta              | 1-524-787-8784 |
| RUD3       | kisti       | 5.0                 | 36615        | 1.29299e+06 | 31.0  | RUDDIfK    | q1549blaiockpark   | 2.0          |                 | Canaxa                |          |                | O               | Salen         |                | AR                   | 1-741-997-1688 |
| JAY4       | sarenq      | 2.0                 | 46a1i3       | 3.0027e+06  | 11.0  | JA5AMANNE  | 1i3r4doddcourt     | 1.0          | M               | Canadz                | f        | 585.0          | O               | Toled8        | Apt. 619       | OR                   | 1-002-194-1991 |
| tod5       | Pauoette    | 5.0                 | A2b2v3       | 1.6161e+06  | 58.0  | todo       | 1411yroxbofostre4t | 2.0          | Z               | UnitefStatesofAm339ca | M        | 430.0          | R               | CotousChristi |                | VA                   | 1-441-371-7651 |
| Kan6       | AjALITA     | 12.0                | 49513        | 1.9476e+06  | 50.0  | Kanmo      | 24696FLORdNCEWESr  | 2.0          | R               | Canaea                | m        | 651.0          | O               | SwltLaksCity  |                | OH                   | 1-957-940-5980 |
| Din7       | Erneato     | 8.0                 | M5r1v6       | 3.11713e+06 | 40.0  | Digkel     | 6488wpplewoowdrivs | 0.0          | Z               | UhitedStatrsofzmerjca |          | 359.0          | U               | Br9wnsviloe   |                | Prince Edward Island | 1-768-633-4096 |
| Thi8       | Toby        | 7.0                 | c6c1q1       | 1.30589e+06 | 91.0  | fhibodeaud | 17494galecoyrt     | 0.0          |                 | 8nitedStqreskfAmerica |          | 614.0          | O               | Escojdido     |                | NV                   | 1-107-689-2155 |
| May9       | ecangelia   |                     | 99716        | 1.85872e+06 | 62.0  | Mayo       | 15913alexissyfe4t  | 1.0          |                 | UnirecStatrsofsmerica |          | 767.0          | O               | kosAngepes    |                | Ontario              | 1-173-594-6096 |

TableB:
| gncd    | frstnm                      | nmbrcrdtcrds   | pstlcd       |           ntwrth |   g | lstnm                         | ddrssln1                                                                    |   nmbrcrs | mddlntl   | cntr                     | gndr   |   crdtrtng | wnrrntflg   | ct         |    ncm | nmbrchldrn   | mrtlstts   | mplr                           |
|:--------|:----------------------------|:---------------|:-------------|-----------------:|----:|:------------------------------|:----------------------------------------------------------------------------|----------:|:----------|:-------------------------|:-------|-----------:|:------------|:-----------|-------:|:-------------|:-----------|:-------------------------------|
| Iok7501 | wbwsqgtaa                   |                | Guudshirvcu  | 321776           |   7 | Iokwiqojocjanndatkdzgymym     | jsurlejkapodmkaccruslfkcqmbcquahsyweopxdxknl                                |         3 | n         | United States of America |        |        580 | U           | Baltimore  |  94490 |              | U          | FM Global                      |
| tia7502 | QGJWCPAPZMWHYHZTNOYSSOQBI   | 2.0            | wyggjewbe    |      2.29232e+06 |  48 | tiabxgseasiibxakctfzhfwotp    | Ggptcoorkpeeigqzevhwhjdxdfbrmidyxsugikhgmuvvpcptuphjlgmipvhrrsgepibdupa     |         4 |           | Canada                   | M      |        683 | R           | Kitchener  |   7037 | 4.0          | S          | MGIC Investment                |
| AOI7503 | BHGXDDPUMBESLQMNEPREPTZNNKM | 2.0            | YMZRQICUTHT  | 969707           |  14 | AOIWIWTIHIXOJ                 | Gpcvjzlwouagawronludakqiuhbrbpbkkltrnlkoezgwcawpayfsnejpkmisnryphbtztbfemoy |         1 | u         |                          |        |        411 | O           | Saint John | 419269 | 5.0          | M          | Ross Stores                    |
| PJQ7504 | Xgnvppcxgfnmawlupgfa        | 9.0            | Bcjuycmcen   |      3.89946e+06 |  29 | PJQSPMBUHYQKBOZ               | Yxkhkvrobywpdczvwmjgxvnuduavcpyiuceglhaskahgyxqpqjbdroyojouqkzfwvfpsddisy   |         4 |           | United States of America | m      |        818 | U           | Berkeley   |  76681 | 5.0          | W          |                                |
| SDV7505 | Tfiozpstcftslqtwkgngiiwo    | 7.0            | Nujxguyehf   |      3.74922e+06 |  69 | SDVLJWXENNGWCQMIW             | Ddsarhvraiskwmrddncqwvzkmjmxtgnpbtgyop                                      |         2 |           | United States of America |        |        370 | R           | Missoula   | 209116 | 4.0          | U          | Alliance One International     |
| Hga7506 | fbcahlrhhjoslfzqvvwwvhk     | 6.0            | Neigswk      |      3.65853e+06 |  47 | Hgakmykzeunwkiaxayulpwyxrcuev | Ajpkrmtlcbdzr                                                               |         0 | F         |                          | F      |        833 | O           | Salinas    | 212203 | 0.0          | U          | Sally Beauty Holdings          |
| Beo7507 | Dcgkohfcwyoaxckalqnkrzwq    | 2.0            | WNCEOQPLW    |      1.73846e+06 |   0 | Beotomyndkiqryllkvpavllytov   | PKSTPUXQIRGWSXSKWRAJTTNBAOLQKAAJFAPGWIHBWVCHOXLE                            |         5 | D         | Canada                   | M      |        536 | U           | San Jose   |  42018 | 5.0          | M          | Wisconsin Energy               |
| Qum7508 | Vmnmcsinflxxmmifydckncc     | 0.0            | Cskdwtkf     |      3.3073e+06  |  46 | Qumxrssnd                     | gyhrpdbplficrfirmtavitgpfmhnnhvsuoqwxrulxlqrdqkzshqovucentrxlakgkpwbrgtd    |         0 |           | United States of America |        |        775 | R           | Cleveland  |  90446 | 0.0          | S          | Carpenter Technology           |
| Hud7509 | Vrkbkkxkddtximspigmlbwzt    | 3.0            | tcxswloetdt  |      1.81642e+06 |   6 | Hudlpfwjagzbnznyhamjkhbf      | GJTWIDOQOAPDVVULJGOOJBWTTANDJXOCQHWWZAGLGMJQXJOMWFTFVGXIH                   |         1 | v         | United States of America |        |        765 | R           | Huntington |  16274 | 1.0          | M          | Liberty Mutual Insurance Group |
| jba7510 | RMWCTFTLSVTMCBI             | 6.0            | Fkpemasoukih |      2.59925e+06 |  22 | jbabemsfwdyeihxq              | Ycltsquohmuugxihqyluhkoy                                                    |         5 |           | Canada                   | m      |        555 | O           | Paterson   |  22215 | 2.0          | M          | Black & Decker                 |



source_headers: AgencyID
FirstName
NumberCreditCards
PostalCode
NetWorth
Age
LastName
AddressLine1
NumberCars
MiddleInitial
Country
Gender
CreditRating
OwnOrRentFlag
City
target_headers: gncd
frstnm
nmbrcrdtcrds
pstlcd
ntwrth
g
lstnm
ddrssln1
nmbrcrs
mddlntl
cntr
gndr
crdtrtng
wnrrntflg
ct
column_mappings: AgencyID
gncd
FirstName
frstnm
NumberCreditCards
nmbrcrdtcrds
PostalCode
pstlcd
NetWorth
ntwrth
Age
g
LastName
lstnm
AddressLine1
ddrssln1
NumberCars
nmbrcrs
MiddleInitial
mddlntl
Country
cntr
Gender
gndr
CreditRating
crdtrtng
OwnOrRentFlag
wnrrntflg
City
ct
output: {"column_mappings": [["AgencyID", "gncd"], ["FirstName", "frstnm"], ["NumberCreditCards", "nmbrcrdtcrds"], ["PostalCode", "pstlcd"], ["NetWorth", "ntwrth"], ["Age", "g"], ["LastName", "lstnm"], ["AddressLine1", "ddrssln1"], ["NumberCars", "nmbrcrs"], ["MiddleInitial", "mddlntl"], ["Country", "cntr"], ["Gender", "gndr"], ["CreditRating", "crdtrtng"], ["OwnOrRentFlag", "wnrrntflg"], ["City", "ct"], ["AddressLine2", null], ["State", null], ["Phone", null]]}