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   | NumberCreditCards   | NumberChildren   | OwnOrRentFlag   |         NetWorth | LastName   | FirstName   | Age   | Phone          | NumberCars   | PostalCode   | CreditRating   | State              | City          | Gender   | MiddleInitial   | AddressLine1         | AddressLine2   |
|:-----------|:--------------------|:-----------------|:----------------|-----------------:|:-----------|:------------|:------|:---------------|:-------------|:-------------|:---------------|:-------------------|:--------------|:---------|:----------------|:---------------------|:---------------|
| PEL0       |                     | 7.0              | O               |      2.24621e+06 | PELLANw    | N2tti       | 144.0 | 1 712 522 6088 |              | T6b1i2       | 359.0          | MA                 | Fairbanke     | f        |                 | 21847 olympia street |                |
| LED1       | 5.0                 | 6.0              | U               |      2.76244e+06 | LEsUC      | hRUDY       | 17.0  | 1 626 426 4298 | 2.0          | 77281        | 493.0          | PA                 | Qu2bec        | F        |                 | 245 congress court   | APT. 624       |
| lat2       | 4.0                 | 0.0              | O               |      1.84989e+06 | katif      | irelanx     |       | 1 524 787 8784 | 1.0          | 91355        | 284.0          | Albertq            | jenderson     |          |                 | 6517 frailing west   |                |
| RUD3       | 7.0                 | 5.0              | O               | 795698           | RUDDICo    | Mistu       | 127.0 | 1 741 997 1688 | 0.0          | 36615        |                | AR                 | Salwm         |          |                 | 11449 blalock park   |                |
| JAY4       | 1.0                 | 3.0              | O               |      1.65095e+06 | JAYAMANNw  | earena      | 98.0  | 1 002 194 1991 | 1.0          | t6a173       | 564.0          | OR                 | roledo        | f        | M               | 18354 dodd court     | Apt. 619       |
| tod5       | 2.0                 | 1.0              | R               |      3.93907e+06 | todo       | Paulettf    | 60.0  | 1 441 371 7651 | 1.0          | A2b1c3       | 234.0          | VA                 | Corp8sCbristi | M        | Z               | 14117 roxboro street |                |
| Kan6       | 1.0                 | 1.0              | O               |      3.99743e+06 | Kanjo      | AMqLITA     | 27.0  | 1 957 940 5980 | 2.0          | 49513        | 323.0          | OH                 | SaitLak2City  | m        | R               | 24697 FLORENCE WEST  |                |
| Din7       | 0.0                 | 2.0              | U               |      4.23692e+06 | Dijkel     | E4nesto     | 82.0  | 1 768 633 4096 | 2.0          | Mrd1v6       | 417.0          | Princewr1ardIsland | Brkwnsvillr   |          | Z               | 6488 applewood drive |                |
| Thi8       | 3.0                 |                  | O               |      2.52724e+06 | Thib8reaux | Toby        | 30.0  | 1 107 689 2155 | 1.0          | g6c1q1       | 529.0          | NV                 | Escondixo     |          |                 | 17404 gale court     |                |
| May9       |                     | 0.0              | O               |      3.18687e+06 | Mayo       | evaggelia   | 32.0  | 1 173 594 6096 | 1.0          | 99716        | 557.0          | On6ario            | LosAngelrz    |          |                 | 15913 alexis street  |                |

TableB:
| prospect_AgeID   | prospect_NuCrCar   | prospect_NumCh   | prospect_OwORF   |     prospect_NWo | prospect_LaNa                 | prospect_FiN                |   prospect_A | prospect_Ph    |   prospect_NumCa | prospect_PosC   |   prospect_CrRat | prospect_St   | prospect_Ci   | prospect_Ge   | prospect_Coun            |   prospect_In | prospect_MarSt   | prospect_Em                    |
|:-----------------|:-------------------|:-----------------|:-----------------|-----------------:|:------------------------------|:----------------------------|-------------:|:---------------|-----------------:|:----------------|-----------------:|:--------------|:--------------|:--------------|:-------------------------|--------------:|:-----------------|:-------------------------------|
| Iok7501          |                    |                  | U                | 321776           | Iokwiqojocjanndatkdzgymym     | wbwsqgtaa                   |            7 | 1-637-119-9996 |                3 | Guudshirvcu     |              580 | MO            | Baltimore     |               | United States of America |         94490 | U                | FM Global                      |
| tia7502          | 2.0                | 4.0              | R                |      2.29232e+06 | tiabxgseasiibxakctfzhfwotp    | QGJWCPAPZMWHYHZTNOYSSOQBI   |           48 | 1-560-405-0048 |                4 | wyggjewbe       |              683 | TX            | Kitchener     | M             | Canada                   |          7037 | S                | MGIC Investment                |
| AOI7503          | 2.0                | 5.0              | O                | 969707           | AOIWIWTIHIXOJ                 | BHGXDDPUMBESLQMNEPREPTZNNKM |           14 | 1-261-306-5079 |                1 | YMZRQICUTHT     |              411 | CT            | Saint John    |               |                          |        419269 | M                | Ross Stores                    |
| PJQ7504          | 9.0                | 5.0              | U                |      3.89946e+06 | PJQSPMBUHYQKBOZ               | Xgnvppcxgfnmawlupgfa        |           29 | 1-642-299-6655 |                4 | Bcjuycmcen      |              818 | UT            | Berkeley      | m             | United States of America |         76681 | W                |                                |
| SDV7505          | 7.0                | 4.0              | R                |      3.74922e+06 | SDVLJWXENNGWCQMIW             | Tfiozpstcftslqtwkgngiiwo    |           69 |                |                2 | Nujxguyehf      |              370 | RI            | Missoula      |               | United States of America |        209116 | U                | Alliance One International     |
| Hga7506          | 6.0                | 0.0              | O                |      3.65853e+06 | Hgakmykzeunwkiaxayulpwyxrcuev | fbcahlrhhjoslfzqvvwwvhk     |           47 | 1-388-257-4273 |                0 | Neigswk         |              833 | DE            | Salinas       | F             |                          |        212203 | U                | Sally Beauty Holdings          |
| Beo7507          | 2.0                | 5.0              | U                |      1.73846e+06 | Beotomyndkiqryllkvpavllytov   | Dcgkohfcwyoaxckalqnkrzwq    |            0 |                |                5 | WNCEOQPLW       |              536 | NM            | San Jose      | M             | Canada                   |         42018 | M                | Wisconsin Energy               |
| Qum7508          | 0.0                | 0.0              | R                |      3.3073e+06  | Qumxrssnd                     | Vmnmcsinflxxmmifydckncc     |           46 | 1-632-118-1891 |                0 | Cskdwtkf        |              775 | WV            | Cleveland     |               | United States of America |         90446 | S                | Carpenter Technology           |
| Hud7509          | 3.0                | 1.0              | R                |      1.81642e+06 | Hudlpfwjagzbnznyhamjkhbf      | Vrkbkkxkddtximspigmlbwzt    |            6 | 1-853-806-4986 |                1 | tcxswloetdt     |              765 | NH            | Huntington    |               | United States of America |         16274 | M                | Liberty Mutual Insurance Group |
| jba7510          | 6.0                | 2.0              | O                |      2.59925e+06 | jbabemsfwdyeihxq              | RMWCTFTLSVTMCBI             |           22 | 1-220-687-2027 |                5 | Fkpemasoukih    |              555 | WY            | Paterson      | m             | Canada                   |         22215 | M                | Black & Decker                 |



source_headers: AgencyID
NumberCreditCards
NumberChildren
OwnOrRentFlag
NetWorth
LastName
FirstName
Age
Phone
NumberCars
PostalCode
CreditRating
State
City
Gender
target_headers: prospect_AgeID
prospect_NuCrCar
prospect_NumCh
prospect_OwORF
prospect_NWo
prospect_LaNa
prospect_FiN
prospect_A
prospect_Ph
prospect_NumCa
prospect_PosC
prospect_CrRat
prospect_St
prospect_Ci
prospect_Ge
column_mappings: AgencyID
prospect_AgeID
NumberCreditCards
prospect_NuCrCar
NumberChildren
prospect_NumCh
OwnOrRentFlag
prospect_OwORF
NetWorth
prospect_NWo
LastName
prospect_LaNa
FirstName
prospect_FiN
Age
prospect_A
Phone
prospect_Ph
NumberCars
prospect_NumCa
PostalCode
prospect_PosC
CreditRating
prospect_CrRat
State
prospect_St
City
prospect_Ci
Gender
prospect_Ge
output: {"column_mappings": [["AgencyID", "prospect_AgeID"], ["NumberCreditCards", "prospect_NuCrCar"], ["NumberChildren", "prospect_NumCh"], ["OwnOrRentFlag", "prospect_OwORF"], ["NetWorth", "prospect_NWo"], ["LastName", "prospect_LaNa"], ["FirstName", "prospect_FiN"], ["Age", "prospect_A"], ["Phone", "prospect_Ph"], ["NumberCars", "prospect_NumCa"], ["PostalCode", "prospect_PosC"], ["CreditRating", "prospect_CrRat"], ["State", "prospect_St"], ["City", "prospect_Ci"], ["Gender", "prospect_Ge"], ["MiddleInitial", null], ["AddressLine1", null], ["AddressLine2", null]]}