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   | State              | NumberChildren   | OwnOrRentFlag   |   Income | PostalCode   | Country               | AddressLine2   | MiddleInitial   | AddressLine1       | MaritalStatus   | NumberCars   |    NetWorth | LastName   | Employer             | FirstName   | Gender   | City           |
|:-----------|:-------------------|:-----------------|:----------------|---------:|:-------------|:----------------------|:---------------|:----------------|:-------------------|:----------------|:-------------|------------:|:-----------|:---------------------|:------------|:---------|:---------------|
| PEL0       | MA                 | 3.0              | O               |   107177 | T6b1k1       | UnitexStsteqofAmer9ca |                |                 | 21947olympias4reeg | W               |              | 5.59122e+06 | PELLAbD    | Brinkd               | Netti       | f        | Fairbanks      |
| LED1       | PA                 | 1.0              | U               |   242963 | 77281        | 6nitedStatesofAk4rida | APTt24         |                 | 245sohgresscourf   | U               | 1.0          | 3.37343e+06 | LwDUC      |                      | TRUDY       | F        | Quebec         |
| lat2       | Alb2rta            | 2.0              | O               |   160744 | 91355        | ynitedStat2skfAmerixa |                |                 | u517fraioingwdst   | S               | 4.0          | 5.21058e+06 | latkf      |                      | ireland     |          | Henderson      |
| RUD3       | AR                 | 4.0              | O               |   152740 | 36615        | Canadz                |                |                 | 11449blalkckosrk   | W               | 2.0          | 4.77925e+06 | RUDDICi    | xjrProructsChemlcals | Misti       |          | Salem          |
| JAY4       | OR                 | 0.0              | O               |    46857 | t6a173       | Cwnada                | Apt6w9         | M               | 18364doddciurt     | M               | 1.0          | 3.25456e+06 | JAYAMANNd  | pshkosh              | sarena      | f        | Toledo         |
| tod5       | VA                 | 2.0              | R               |   194643 | A1b1v3       | UbitesStatfsofAmer7ca |                | Z               | 141q7rkxborostr3et | M               | 2.0          | 2.30147e+06 | todo       |                      | Paulette    | M        | Corpus Christi |
| Kan6       | OH                 | 2.0              | O               |   175742 | 49513        | Canaxa                |                | R               | 2468yFLkRENCEWEST  |                 | 1.0          | 4.0907e+06  | oanno      | VeraSunEnsggy        | AMALITA     | m        | Salt Lake City |
| Din7       | PribceEdwardlslwnd | 2.0              | U               |    25271 | k5d1v6       | UjitedStateskfAmerkcq |                | Z               | 647uwpplewooddrive | M               | 1.0          | 5.69925e+06 | Dinkei     | IDT                  | Ernesto     |          | Brownsville    |
| Thi8       | NV                 |                  | O               |   239151 | V6c1s1       | Un9tedxtatesofxmeruca |                |                 | 17403galecpurt     | U               | 1.0          | 2.29282e+06 | Thlbodeaud | AdamsRes9ursesEnsrgt | Toby        |          | Escondido      |
| May9       | Obtario            | 1.0              | O               |   258993 | 99716        | Ubjt3detatesofAmerica |                |                 | 1y9q3aledisstreet  | M               | 4.0          | 2.96392e+06 | Mayo       | MGICInvestmehg       | evangelia   |          | Los Angeles    |

TableB:
| AgID    | St   | NuCh   | OwOReFl   |    Inc | PoC          | Co                       | AdL2                                                              | MiIni   | AddrL1                                                                      | MarSt   |   NumC |             NWor | LN                            | Em                             | Ph             |   A |   CreRat | NumCreCar   |
|:--------|:-----|:-------|:----------|-------:|:-------------|:-------------------------|:------------------------------------------------------------------|:--------|:----------------------------------------------------------------------------|:--------|-------:|-----------------:|:------------------------------|:-------------------------------|:---------------|----:|---------:|:------------|
| Iok7501 | MO   |        | U         |  94490 | Guudshirvcu  | United States of America | GKOIKEZZMQTPQUQZLSAUUMVBDPAXTWNWSXTYJYQ                           | n       | jsurlejkapodmkaccruslfkcqmbcquahsyweopxdxknl                                | U       |      3 | 321776           | Iokwiqojocjanndatkdzgymym     | FM Global                      | 1-637-119-9996 |   7 |      580 |             |
| tia7502 | TX   | 4.0    | R         |   7037 | wyggjewbe    | Canada                   | ocmgcvnexhqhgoyrwpkgaopthdvandlzaaleqccjpjkbirtcqvorobgskhtlgndvn |         | Ggptcoorkpeeigqzevhwhjdxdfbrmidyxsugikhgmuvvpcptuphjlgmipvhrrsgepibdupa     | S       |      4 |      2.29232e+06 | tiabxgseasiibxakctfzhfwotp    | MGIC Investment                | 1-560-405-0048 |  48 |      683 | 2.0         |
| AOI7503 | CT   | 5.0    | O         | 419269 | YMZRQICUTHT  |                          | Cdrxeolwrrxmwmhgexvcstvzz                                         | u       | Gpcvjzlwouagawronludakqiuhbrbpbkkltrnlkoezgwcawpayfsnejpkmisnryphbtztbfemoy | M       |      1 | 969707           | AOIWIWTIHIXOJ                 | Ross Stores                    | 1-261-306-5079 |  14 |      411 | 2.0         |
| PJQ7504 | UT   | 5.0    | U         |  76681 | Bcjuycmcen   | United States of America | WKSBVOFGJHQGAEKUYRZHHPH                                           |         | Yxkhkvrobywpdczvwmjgxvnuduavcpyiuceglhaskahgyxqpqjbdroyojouqkzfwvfpsddisy   | W       |      4 |      3.89946e+06 | PJQSPMBUHYQKBOZ               |                                | 1-642-299-6655 |  29 |      818 | 9.0         |
| SDV7505 | RI   | 4.0    | R         | 209116 | Nujxguyehf   | United States of America | skxijfqpzshmts                                                    |         | Ddsarhvraiskwmrddncqwvzkmjmxtgnpbtgyop                                      | U       |      2 |      3.74922e+06 | SDVLJWXENNGWCQMIW             | Alliance One International     |                |  69 |      370 | 7.0         |
| Hga7506 | DE   | 0.0    | O         | 212203 | Neigswk      |                          | ZETOHHRKIBHCQCKZODIXJJSXCFY                                       | F       | Ajpkrmtlcbdzr                                                               | U       |      0 |      3.65853e+06 | Hgakmykzeunwkiaxayulpwyxrcuev | Sally Beauty Holdings          | 1-388-257-4273 |  47 |      833 | 6.0         |
| Beo7507 | NM   | 5.0    | U         |  42018 | WNCEOQPLW    | Canada                   | LJXAXKUJXQBGWBHJJAAM                                              | D       | PKSTPUXQIRGWSXSKWRAJTTNBAOLQKAAJFAPGWIHBWVCHOXLE                            | M       |      5 |      1.73846e+06 | Beotomyndkiqryllkvpavllytov   | Wisconsin Energy               |                |   0 |      536 | 2.0         |
| Qum7508 | WV   | 0.0    | R         |  90446 | Cskdwtkf     | United States of America | Jmlgjkjbqhrudrkqrm                                                |         | gyhrpdbplficrfirmtavitgpfmhnnhvsuoqwxrulxlqrdqkzshqovucentrxlakgkpwbrgtd    | S       |      0 |      3.3073e+06  | Qumxrssnd                     | Carpenter Technology           | 1-632-118-1891 |  46 |      775 | 0.0         |
| Hud7509 | NH   | 1.0    | R         |  16274 | tcxswloetdt  | United States of America | Qqcilgblxyikgr                                                    | v       | GJTWIDOQOAPDVVULJGOOJBWTTANDJXOCQHWWZAGLGMJQXJOMWFTFVGXIH                   | M       |      1 |      1.81642e+06 | Hudlpfwjagzbnznyhamjkhbf      | Liberty Mutual Insurance Group | 1-853-806-4986 |   6 |      765 | 3.0         |
| jba7510 | WY   | 2.0    | O         |  22215 | Fkpemasoukih | Canada                   | Ahtohqjfzfarn                                                     |         | Ycltsquohmuugxihqyluhkoy                                                    | M       |      5 |      2.59925e+06 | jbabemsfwdyeihxq              | Black & Decker                 | 1-220-687-2027 |  22 |      555 | 6.0         |



source_headers: AgencyID
State
NumberChildren
OwnOrRentFlag
Income
PostalCode
Country
AddressLine2
MiddleInitial
AddressLine1
MaritalStatus
NumberCars
NetWorth
LastName
Employer
target_headers: AgID
St
NuCh
OwOReFl
Inc
PoC
Co
AdL2
MiIni
AddrL1
MarSt
NumC
NWor
LN
Em
column_mappings: AgencyID
AgID
State
St
NumberChildren
NuCh
OwnOrRentFlag
OwOReFl
Income
Inc
PostalCode
PoC
Country
Co
AddressLine2
AdL2
MiddleInitial
MiIni
AddressLine1
AddrL1
MaritalStatus
MarSt
NumberCars
NumC
NetWorth
NWor
LastName
LN
Employer
Em
output: {"column_mappings": [["AgencyID", "AgID"], ["State", "St"], ["NumberChildren", "NuCh"], ["OwnOrRentFlag", "OwOReFl"], ["Income", "Inc"], ["PostalCode", "PoC"], ["Country", "Co"], ["AddressLine2", "AdL2"], ["MiddleInitial", "MiIni"], ["AddressLine1", "AddrL1"], ["MaritalStatus", "MarSt"], ["NumberCars", "NumC"], ["NetWorth", "NWor"], ["LastName", "LN"], ["Employer", "Em"], ["FirstName", null], ["Gender", null], ["City", null]]}