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   | Phone          | City          | LastName   |   Income | NumberCars   |         NetWorth | FirstName   | Age   | MaritalStatus   | NumberChildren   | MiddleInitial   | Gender   | AddressLine1         | AddressLine2   | PostalCode   |
|:-----------|:---------------|:--------------|:-----------|---------:|:-------------|-----------------:|:------------|:------|:----------------|:-----------------|:----------------|:---------|:---------------------|:---------------|:-------------|
| PEL0       | 1 712 522 6088 | Falrbanks     | PELLsND    |    49913 |              |      1.54062e+06 | Nefti       | 37.0  | W               | 0.0              |                 | f        | 21847 olympia street |                | T6b 1i1      |
| LED1       | 1 626 426 4298 | Qufbec        | iEDUC      |   114441 | 0.0          |      1.57287e+06 | TeUDY       | 105.0 | U               | 2.0              |                 | F        | 245 congress court   | APT. 624       | 77281        |
| lat2       | 1 524 787 8784 | Hfnderson     | lafif      |   358102 | 1.0          |      3.61439e+06 | irrland     |       | S               | 3.0              |                 |          | 6517 frailing west   |                | 91355        |
| RUD3       | 1 741 997 1688 | Sslem         | RUeDICK    |   194332 | 3.0          |      2.2212e+06  | Miati       | 73.0  | W               | 2.0              |                 |          | 11449 blalock park   |                | 36615        |
| JAY4       | 1 002 194 1991 | Topedo        | JAYAMqNNE  |    61340 | 1.0          |      6.14938e+06 | ssrena      | 73.0  | M               | 2.0              | M               | f        | 18354 dodd court     | Apt. 619       | t6a 1i3      |
| tod5       | 1 441 371 7651 | Co3pusvhristi | todo       |   106760 | 0.0          |      1.59299e+06 | Paule5te    | 75.0  | M               | 2.0              | Z               | M        | 14117 roxboro street |                | A2b 1v3      |
| Kan6       | 1 957 940 5980 | SaltkakeCi4y  | Kwnno      |   116162 | 3.0          |      2.19053e+06 | AMAoITA     | 0.0   |                 | 0.0              | R               | m        | 24697 FLORENCE WEST  |                | 49513        |
| Din7       | 1 768 633 4096 | Brownsvikld   | Dink2l     |   285993 | 1.0          |      3.45745e+06 | 2rnesto     | 21.0  | M               | 1.0              | Z               |          | 6488 applewood drive |                | M5d 1v6      |
| Thi8       | 1 107 689 2155 | Escond8do     | Thinodeaus |    48190 | 4.0          | 212639           | Toby        | 86.0  | U               |                  |                 |          | 17404 gale court     |                | V6c 1q1      |
| May9       | 1 173 594 6096 | LosAntelds    | Mayo       |   161583 | 2.0          |      1.28969e+06 | 2vangelia   | 93.0  | M               | 2.0              |                 |          | 15913 alexis street  |                | 99716        |

TableB:
| AgID    | Pho            | C          | LaNa                          |     In |   NumC |              NWo | FirN                        |   A | MarSt   | NumChi   | Sta   | Coun                     |   CreRat | OwOReF   | Em                             | NuCrCar   |
|:--------|:---------------|:-----------|:------------------------------|-------:|-------:|-----------------:|:----------------------------|----:|:--------|:---------|:------|:-------------------------|---------:|:---------|:-------------------------------|:----------|
| Iok7501 | 1-637-119-9996 | Baltimore  | Iokwiqojocjanndatkdzgymym     |  94490 |      3 | 321776           | wbwsqgtaa                   |   7 | U       |          | MO    | United States of America |      580 | U        | FM Global                      |           |
| tia7502 | 1-560-405-0048 | Kitchener  | tiabxgseasiibxakctfzhfwotp    |   7037 |      4 |      2.29232e+06 | QGJWCPAPZMWHYHZTNOYSSOQBI   |  48 | S       | 4.0      | TX    | Canada                   |      683 | R        | MGIC Investment                | 2.0       |
| AOI7503 | 1-261-306-5079 | Saint John | AOIWIWTIHIXOJ                 | 419269 |      1 | 969707           | BHGXDDPUMBESLQMNEPREPTZNNKM |  14 | M       | 5.0      | CT    |                          |      411 | O        | Ross Stores                    | 2.0       |
| PJQ7504 | 1-642-299-6655 | Berkeley   | PJQSPMBUHYQKBOZ               |  76681 |      4 |      3.89946e+06 | Xgnvppcxgfnmawlupgfa        |  29 | W       | 5.0      | UT    | United States of America |      818 | U        |                                | 9.0       |
| SDV7505 |                | Missoula   | SDVLJWXENNGWCQMIW             | 209116 |      2 |      3.74922e+06 | Tfiozpstcftslqtwkgngiiwo    |  69 | U       | 4.0      | RI    | United States of America |      370 | R        | Alliance One International     | 7.0       |
| Hga7506 | 1-388-257-4273 | Salinas    | Hgakmykzeunwkiaxayulpwyxrcuev | 212203 |      0 |      3.65853e+06 | fbcahlrhhjoslfzqvvwwvhk     |  47 | U       | 0.0      | DE    |                          |      833 | O        | Sally Beauty Holdings          | 6.0       |
| Beo7507 |                | San Jose   | Beotomyndkiqryllkvpavllytov   |  42018 |      5 |      1.73846e+06 | Dcgkohfcwyoaxckalqnkrzwq    |   0 | M       | 5.0      | NM    | Canada                   |      536 | U        | Wisconsin Energy               | 2.0       |
| Qum7508 | 1-632-118-1891 | Cleveland  | Qumxrssnd                     |  90446 |      0 |      3.3073e+06  | Vmnmcsinflxxmmifydckncc     |  46 | S       | 0.0      | WV    | United States of America |      775 | R        | Carpenter Technology           | 0.0       |
| Hud7509 | 1-853-806-4986 | Huntington | Hudlpfwjagzbnznyhamjkhbf      |  16274 |      1 |      1.81642e+06 | Vrkbkkxkddtximspigmlbwzt    |   6 | M       | 1.0      | NH    | United States of America |      765 | R        | Liberty Mutual Insurance Group | 3.0       |
| jba7510 | 1-220-687-2027 | Paterson   | jbabemsfwdyeihxq              |  22215 |      5 |      2.59925e+06 | RMWCTFTLSVTMCBI             |  22 | M       | 2.0      | WY    | Canada                   |      555 | O        | Black & Decker                 | 6.0       |



source_headers: AgencyID
Phone
City
LastName
Income
NumberCars
NetWorth
FirstName
Age
MaritalStatus
NumberChildren
target_headers: AgID
Pho
C
LaNa
In
NumC
NWo
FirN
A
MarSt
NumChi
column_mappings: AgencyID
AgID
Phone
Pho
City
C
LastName
LaNa
Income
In
NumberCars
NumC
NetWorth
NWo
FirstName
FirN
Age
A
MaritalStatus
MarSt
NumberChildren
NumChi
output: {"column_mappings": [["AgencyID", "AgID"], ["Phone", "Pho"], ["City", "C"], ["LastName", "LaNa"], ["Income", "In"], ["NumberCars", "NumC"], ["NetWorth", "NWo"], ["FirstName", "FirN"], ["Age", "A"], ["MaritalStatus", "MarSt"], ["NumberChildren", "NumChi"], ["MiddleInitial", null], ["Gender", null], ["AddressLine1", null], ["AddressLine2", null], ["PostalCode", null]]}