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   | AddressLine2   | NumberCreditCards   | LastName   | MaritalStatus   | AddressLine1       | Age   | NumberCars   | City          | PostalCode   | Country               | FirstName   | MiddleInitial   | Gender   | State                | Phone          |
|:-----------|:---------------|:--------------------|:-----------|:----------------|:-------------------|:------|:-------------|:--------------|:-------------|:----------------------|:------------|:----------------|:---------|:---------------------|:---------------|
| PEL0       |                |                     | PELLAjD    | W               | 218470lympiastrswt | 26.0  |              | bairbanks     | T6b1i2       | UnitedzratexofAmerisa | Netti       |                 | f        | MA                   | 1-712-522-6088 |
| LED1       | AlT624         | 11.0                | LEDiC      | U               | 245conyredscou3t   | 16.0  | 2.0          | Quehec        | 77281        | UnitexStateqpfAmerjca | TRUDY       |                 | F        | PA                   | 1-626-426-4298 |
| lat2       |                | 10.0                | lqtif      | S               | 6517ffaolinbwest   |       | 3.0          | Hendersoj     | 91355        | 7nitedStafssofAmfrica | ireland     |                 |          | Alberta              | 1-524-787-8784 |
| RUD3       |                | 7.0                 | RUDDICj    | W               | 11449blxiockparm   | 93.0  | 2.0          | Salrm         | 36615        | Canadz                | Misti       |                 |          | AR                   | 1-741-997-1688 |
| JAY4       | A9t619         | 6.0                 | JAYAMAbNE  | M               | 1835rdoddvourt     | 97.0  | 0.0          | Tolexo        | t6a1iw       | Cansda                | sarena      | M               | f        | OR                   | 1-002-194-1991 |
| tod5       |                | 4.0                 | todo       | M               | 14117roxflros4reet | 16.0  | 2.0          | CirpudChristi | A2f1v3       | Un8redStztssofAmerica | Paulette    | Z               | M        | VA                   | 1-441-371-7651 |
| Kan6       |                | 11.0                | Kanbo      |                 | 2469irLORENCEqEST  | 51.0  | 4.0          | xaltLakeClty  | 49513        | Canadq                | AMALITA     | R               | m        | OH                   | 1-957-940-5980 |
| Din7       |                | 4.0                 | Dink3l     | M               | 6488a0pl3wo0ddrive | 113.0 | 2.0          | Browndviple   | Mrd1v6       | UnjgedStateqodAmerica | Ernesto     | Z               |          | Prince Edward Island | 1-768-633-4096 |
| Thi8       |                | 9.0                 | Tjibideaux | U               | 174p4galeco8rt     | 58.0  | 2.0          | Escondjdo     | V6c1qw       | Unit4dStatesogwkerica | Toby        |                 |          | NV                   | 1-107-689-2155 |
| May9       |                |                     | Mayo       | M               | q591ralexksstreet  | 27.0  | 2.0          | LosAbgelee    | 99716        | ynitedStstesofwmericx | evangelia   |                 |          | Ontario              | 1-173-594-6096 |

TableB:
| prospect_AgeID   | prospect_AddrLi2                                                  | prospect_NumCreCar   | prospect_LaNa                 | prospect_MaSta   | prospect_AddrL1                                                             |   prospect_Ag |   prospect_NuCa | prospect_C   | prospect_PoCo   | prospect_Co              |   prospect_In | prospect_NuCh   |   prospect_CreRat | prospect_OwORF   | prospect_Em                    |   prospect_NeWor |
|:-----------------|:------------------------------------------------------------------|:---------------------|:------------------------------|:-----------------|:----------------------------------------------------------------------------|--------------:|----------------:|:-------------|:----------------|:-------------------------|--------------:|:----------------|------------------:|:-----------------|:-------------------------------|-----------------:|
| Iok7501          | GKOIKEZZMQTPQUQZLSAUUMVBDPAXTWNWSXTYJYQ                           |                      | Iokwiqojocjanndatkdzgymym     | U                | jsurlejkapodmkaccruslfkcqmbcquahsyweopxdxknl                                |             7 |               3 | Baltimore    | Guudshirvcu     | United States of America |         94490 |                 |               580 | U                | FM Global                      | 321776           |
| tia7502          | ocmgcvnexhqhgoyrwpkgaopthdvandlzaaleqccjpjkbirtcqvorobgskhtlgndvn | 2.0                  | tiabxgseasiibxakctfzhfwotp    | S                | Ggptcoorkpeeigqzevhwhjdxdfbrmidyxsugikhgmuvvpcptuphjlgmipvhrrsgepibdupa     |            48 |               4 | Kitchener    | wyggjewbe       | Canada                   |          7037 | 4.0             |               683 | R                | MGIC Investment                |      2.29232e+06 |
| AOI7503          | Cdrxeolwrrxmwmhgexvcstvzz                                         | 2.0                  | AOIWIWTIHIXOJ                 | M                | Gpcvjzlwouagawronludakqiuhbrbpbkkltrnlkoezgwcawpayfsnejpkmisnryphbtztbfemoy |            14 |               1 | Saint John   | YMZRQICUTHT     |                          |        419269 | 5.0             |               411 | O                | Ross Stores                    | 969707           |
| PJQ7504          | WKSBVOFGJHQGAEKUYRZHHPH                                           | 9.0                  | PJQSPMBUHYQKBOZ               | W                | Yxkhkvrobywpdczvwmjgxvnuduavcpyiuceglhaskahgyxqpqjbdroyojouqkzfwvfpsddisy   |            29 |               4 | Berkeley     | Bcjuycmcen      | United States of America |         76681 | 5.0             |               818 | U                |                                |      3.89946e+06 |
| SDV7505          | skxijfqpzshmts                                                    | 7.0                  | SDVLJWXENNGWCQMIW             | U                | Ddsarhvraiskwmrddncqwvzkmjmxtgnpbtgyop                                      |            69 |               2 | Missoula     | Nujxguyehf      | United States of America |        209116 | 4.0             |               370 | R                | Alliance One International     |      3.74922e+06 |
| Hga7506          | ZETOHHRKIBHCQCKZODIXJJSXCFY                                       | 6.0                  | Hgakmykzeunwkiaxayulpwyxrcuev | U                | Ajpkrmtlcbdzr                                                               |            47 |               0 | Salinas      | Neigswk         |                          |        212203 | 0.0             |               833 | O                | Sally Beauty Holdings          |      3.65853e+06 |
| Beo7507          | LJXAXKUJXQBGWBHJJAAM                                              | 2.0                  | Beotomyndkiqryllkvpavllytov   | M                | PKSTPUXQIRGWSXSKWRAJTTNBAOLQKAAJFAPGWIHBWVCHOXLE                            |             0 |               5 | San Jose     | WNCEOQPLW       | Canada                   |         42018 | 5.0             |               536 | U                | Wisconsin Energy               |      1.73846e+06 |
| Qum7508          | Jmlgjkjbqhrudrkqrm                                                | 0.0                  | Qumxrssnd                     | S                | gyhrpdbplficrfirmtavitgpfmhnnhvsuoqwxrulxlqrdqkzshqovucentrxlakgkpwbrgtd    |            46 |               0 | Cleveland    | Cskdwtkf        | United States of America |         90446 | 0.0             |               775 | R                | Carpenter Technology           |      3.3073e+06  |
| Hud7509          | Qqcilgblxyikgr                                                    | 3.0                  | Hudlpfwjagzbnznyhamjkhbf      | M                | GJTWIDOQOAPDVVULJGOOJBWTTANDJXOCQHWWZAGLGMJQXJOMWFTFVGXIH                   |             6 |               1 | Huntington   | tcxswloetdt     | United States of America |         16274 | 1.0             |               765 | R                | Liberty Mutual Insurance Group |      1.81642e+06 |
| jba7510          | Ahtohqjfzfarn                                                     | 6.0                  | jbabemsfwdyeihxq              | M                | Ycltsquohmuugxihqyluhkoy                                                    |            22 |               5 | Paterson     | Fkpemasoukih    | Canada                   |         22215 | 2.0             |               555 | O                | Black & Decker                 |      2.59925e+06 |



source_headers: AgencyID
AddressLine2
NumberCreditCards
LastName
MaritalStatus
AddressLine1
Age
NumberCars
City
PostalCode
Country
target_headers: prospect_AgeID
prospect_AddrLi2
prospect_NumCreCar
prospect_LaNa
prospect_MaSta
prospect_AddrL1
prospect_Ag
prospect_NuCa
prospect_C
prospect_PoCo
prospect_Co
column_mappings: AgencyID
prospect_AgeID
AddressLine2
prospect_AddrLi2
NumberCreditCards
prospect_NumCreCar
LastName
prospect_LaNa
MaritalStatus
prospect_MaSta
AddressLine1
prospect_AddrL1
Age
prospect_Ag
NumberCars
prospect_NuCa
City
prospect_C
PostalCode
prospect_PoCo
Country
prospect_Co
output: {"column_mappings": [["AgencyID", "prospect_AgeID"], ["AddressLine2", "prospect_AddrLi2"], ["NumberCreditCards", "prospect_NumCreCar"], ["LastName", "prospect_LaNa"], ["MaritalStatus", "prospect_MaSta"], ["AddressLine1", "prospect_AddrL1"], ["Age", "prospect_Ag"], ["NumberCars", "prospect_NuCa"], ["City", "prospect_C"], ["PostalCode", "prospect_PoCo"], ["Country", "prospect_Co"], ["FirstName", null], ["MiddleInitial", null], ["Gender", null], ["State", null], ["Phone", null]]}