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   |   Income | Country               | OwnOrRentFlag   | State              | MiddleInitial   | NumberCars   | LastName   | Phone          | MaritalStatus   | CreditRating   | FirstName   | Gender   | AddressLine1         | AddressLine2   | PostalCode   |
|:-----------|---------:|:----------------------|:----------------|:-------------------|:----------------|:-------------|:-----------|:---------------|:----------------|:---------------|:------------|:---------|:---------------------|:---------------|:-------------|
| PEL0       |    30586 | UnitedStatesofAmwfidz | O               | MA                 |                 |              | PELpAND    | 1 712 522 6088 | W               | 404.0          | Netti       | f        | 21847 olympia street |                | T6b 1i1      |
| LED1       |   171938 | ynitedSta4esoeAmeroca | U               | PA                 |                 | 1.0          | LEDyC      | 1 626 426 4298 | U               | 397.0          | TRUDY       | F        | 245 congress court   | APT. 624       | 77281        |
| lat2       |    99524 | hnitefStsteaofAmerica | O               | qlberta            |                 | 2.0          | latof      | 1 524 787 8784 | S               | 800.0          | ireland     |          | 6517 frailing west   |                | 91355        |
| RUD3       |    70365 | vanada                | O               | AR                 |                 | 4.0          | RUDDICo    | 1 741 997 1688 | W               |                | Misti       |          | 11449 blalock park   |                | 36615        |
| JAY4       |   179540 | Canadx                | O               | OR                 | M               | 3.0          | JA5AMANNE  | 1 002 194 1991 | M               | 682.0          | sarena      | f        | 18354 dodd court     | Apt. 619       | t6a 1i3      |
| tod5       |   233446 | UnitedStqtecofAmerufa | R               | VA                 | Z               | 1.0          | todo       | 1 441 371 7651 | M               | 683.0          | Paulette    | M        | 14117 roxboro street |                | A2b 1v3      |
| Kan6       |    40663 | Camada                | O               | OH                 | R               | 2.0          | Kqnno      | 1 957 940 5980 |                 | 724.0          | AMALITA     | m        | 24697 FLORENCE WEST  |                | 49513        |
| Din7       |   186884 | UnotwdStatewofAmetica | U               | PrijceEdward7wland | Z               | 5.0          | Dinuel     | 1 768 633 4096 | M               | 623.0          | Ernesto     |          | 6488 applewood drive |                | M5d 1v6      |
| Thi8       |    82412 | UnotedStat4sogqmerica | O               | NV                 |                 | 2.0          | Thibod3akx | 1 107 689 2155 | U               | 631.0          | Toby        |          | 17404 gale court     |                | V6c 1q1      |
| May9       |   205281 | UnutedStatdsofAmerlcw | O               | Onta3io            |                 | 1.0          | Mayo       | 1 173 594 6096 | M               | 454.0          | evangelia   |          | 15913 alexis street  |                | 99716        |

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



source_headers: AgencyID
Income
Country
OwnOrRentFlag
State
MiddleInitial
NumberCars
LastName
Phone
MaritalStatus
CreditRating
target_headers: AgID
Inc
Co
OwOReF
Sta
MidIn
NumCa
LNa
Ph
MarSta
CrRat
column_mappings: AgencyID
AgID
Income
Inc
Country
Co
OwnOrRentFlag
OwOReF
State
Sta
MiddleInitial
MidIn
NumberCars
NumCa
LastName
LNa
Phone
Ph
MaritalStatus
MarSta
CreditRating
CrRat
output: {"column_mappings": [["AgencyID", "AgID"], ["Income", "Inc"], ["Country", "Co"], ["OwnOrRentFlag", "OwOReF"], ["State", "Sta"], ["MiddleInitial", "MidIn"], ["NumberCars", "NumCa"], ["LastName", "LNa"], ["Phone", "Ph"], ["MaritalStatus", "MarSta"], ["CreditRating", "CrRat"], ["FirstName", null], ["Gender", null], ["AddressLine1", null], ["AddressLine2", null], ["PostalCode", null]]}