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   | CreditRating   | AddressLine1         | MaritalStatus   |         NetWorth | LastName   | MiddleInitial   | Age   | FirstName   | PostalCode   | OwnOrRentFlag   | Gender   | AddressLine2   | City           | State                | Country                  |
|:-----------|:---------------|:---------------------|:----------------|-----------------:|:-----------|:----------------|:------|:------------|:-------------|:----------------|:---------|:---------------|:---------------|:---------------------|:-------------------------|
| PEL0       | 760.0          | 21847 olympia street | W               |      1.05887e+06 | PELLAND    |                 | 20.0  | Netti       | T6b 1i1      | O               | f        |                | Fairbanks      | MA                   | United States of America |
| LED1       | 555.0          | 245 congress court   | U               |      1.98818e+06 | LEDUC      |                 | 3.0   | TRUDY       | 77281        | U               | F        | APT. 624       | Quebec         | PA                   | United States of America |
| lat2       | 566.0          | 6517 frailing west   | S               |      3.67313e+06 | latif      |                 |       | ireland     | 91355        | O               |          |                | Henderson      | Alberta              | United States of America |
| RUD3       |                | 11449 blalock park   | W               |      2.0059e+06  | RUDDICK    |                 | 77.0  | Misti       | 36615        | O               |          |                | Salem          | AR                   | Canada                   |
| JAY4       | 815.0          | 18354 dodd court     | M               | 624736           | JAYAMANNE  | M               | 21.0  | sarena      | t6a 1i3      | O               | f        | Apt. 619       | Toledo         | OR                   | Canada                   |
| tod5       | 333.0          | 14117 roxboro street | M               |      3.06462e+06 | todo       | Z               | 77.0  | Paulette    | A2b 1v3      | R               | M        |                | Corpus Christi | VA                   | United States of America |
| Kan6       | 528.0          | 24697 FLORENCE WEST  |                 |      3.48913e+06 | Kanno      | R               | 23.0  | AMALITA     | 49513        | O               | m        |                | Salt Lake City | OH                   | Canada                   |
| Din7       | 680.0          | 6488 applewood drive | M               |      3.43074e+06 | Dinkel     | Z               | 9.0   | Ernesto     | M5d 1v6      | U               |          |                | Brownsville    | Prince Edward Island | United States of America |
| Thi8       | 761.0          | 17404 gale court     | U               |      1.74361e+06 | Thibodeaux |                 | 63.0  | Toby        | V6c 1q1      | O               |          |                | Escondido      | NV                   | United States of America |
| May9       | 416.0          | 15913 alexis street  | M               | 216299           | Mayo       |                 | 32.0  | evangelia   | 99716        | O               |          |                | Los Angeles    | Ontario              | United States of America |

TableB:
| AgeID   |   CreRa | AdLi1                                                                       | MarSt   |            NeWor | LNa                           | MidIni   |   A | FiNa                        | PosCo        | OwORFl   | Ph             |    Inc |   NuC | NumChil   | Empl                           | NuCreCar   |
|:--------|--------:|:----------------------------------------------------------------------------|:--------|-----------------:|:------------------------------|:---------|----:|:----------------------------|:-------------|:---------|:---------------|-------:|------:|:----------|:-------------------------------|:-----------|
| Iok7501 |     580 | jsurlejkapodmkaccruslfkcqmbcquahsyweopxdxknl                                | U       | 321776           | Iokwiqojocjanndatkdzgymym     | n        |   7 | wbwsqgtaa                   | Guudshirvcu  | U        | 1-637-119-9996 |  94490 |     3 |           | FM Global                      |            |
| tia7502 |     683 | Ggptcoorkpeeigqzevhwhjdxdfbrmidyxsugikhgmuvvpcptuphjlgmipvhrrsgepibdupa     | S       |      2.29232e+06 | tiabxgseasiibxakctfzhfwotp    |          |  48 | QGJWCPAPZMWHYHZTNOYSSOQBI   | wyggjewbe    | R        | 1-560-405-0048 |   7037 |     4 | 4.0       | MGIC Investment                | 2.0        |
| AOI7503 |     411 | Gpcvjzlwouagawronludakqiuhbrbpbkkltrnlkoezgwcawpayfsnejpkmisnryphbtztbfemoy | M       | 969707           | AOIWIWTIHIXOJ                 | u        |  14 | BHGXDDPUMBESLQMNEPREPTZNNKM | YMZRQICUTHT  | O        | 1-261-306-5079 | 419269 |     1 | 5.0       | Ross Stores                    | 2.0        |
| PJQ7504 |     818 | Yxkhkvrobywpdczvwmjgxvnuduavcpyiuceglhaskahgyxqpqjbdroyojouqkzfwvfpsddisy   | W       |      3.89946e+06 | PJQSPMBUHYQKBOZ               |          |  29 | Xgnvppcxgfnmawlupgfa        | Bcjuycmcen   | U        | 1-642-299-6655 |  76681 |     4 | 5.0       |                                | 9.0        |
| SDV7505 |     370 | Ddsarhvraiskwmrddncqwvzkmjmxtgnpbtgyop                                      | U       |      3.74922e+06 | SDVLJWXENNGWCQMIW             |          |  69 | Tfiozpstcftslqtwkgngiiwo    | Nujxguyehf   | R        |                | 209116 |     2 | 4.0       | Alliance One International     | 7.0        |
| Hga7506 |     833 | Ajpkrmtlcbdzr                                                               | U       |      3.65853e+06 | Hgakmykzeunwkiaxayulpwyxrcuev | F        |  47 | fbcahlrhhjoslfzqvvwwvhk     | Neigswk      | O        | 1-388-257-4273 | 212203 |     0 | 0.0       | Sally Beauty Holdings          | 6.0        |
| Beo7507 |     536 | PKSTPUXQIRGWSXSKWRAJTTNBAOLQKAAJFAPGWIHBWVCHOXLE                            | M       |      1.73846e+06 | Beotomyndkiqryllkvpavllytov   | D        |   0 | Dcgkohfcwyoaxckalqnkrzwq    | WNCEOQPLW    | U        |                |  42018 |     5 | 5.0       | Wisconsin Energy               | 2.0        |
| Qum7508 |     775 | gyhrpdbplficrfirmtavitgpfmhnnhvsuoqwxrulxlqrdqkzshqovucentrxlakgkpwbrgtd    | S       |      3.3073e+06  | Qumxrssnd                     |          |  46 | Vmnmcsinflxxmmifydckncc     | Cskdwtkf     | R        | 1-632-118-1891 |  90446 |     0 | 0.0       | Carpenter Technology           | 0.0        |
| Hud7509 |     765 | GJTWIDOQOAPDVVULJGOOJBWTTANDJXOCQHWWZAGLGMJQXJOMWFTFVGXIH                   | M       |      1.81642e+06 | Hudlpfwjagzbnznyhamjkhbf      | v        |   6 | Vrkbkkxkddtximspigmlbwzt    | tcxswloetdt  | R        | 1-853-806-4986 |  16274 |     1 | 1.0       | Liberty Mutual Insurance Group | 3.0        |
| jba7510 |     555 | Ycltsquohmuugxihqyluhkoy                                                    | M       |      2.59925e+06 | jbabemsfwdyeihxq              |          |  22 | RMWCTFTLSVTMCBI             | Fkpemasoukih | O        | 1-220-687-2027 |  22215 |     5 | 2.0       | Black & Decker                 | 6.0        |



source_headers: AgencyID
CreditRating
AddressLine1
MaritalStatus
NetWorth
LastName
MiddleInitial
Age
FirstName
PostalCode
OwnOrRentFlag
target_headers: AgeID
CreRa
AdLi1
MarSt
NeWor
LNa
MidIni
A
FiNa
PosCo
OwORFl
column_mappings: AgencyID
AgeID
CreditRating
CreRa
AddressLine1
AdLi1
MaritalStatus
MarSt
NetWorth
NeWor
LastName
LNa
MiddleInitial
MidIni
Age
A
FirstName
FiNa
PostalCode
PosCo
OwnOrRentFlag
OwORFl
output: {"column_mappings": [["AgencyID", "AgeID"], ["CreditRating", "CreRa"], ["AddressLine1", "AdLi1"], ["MaritalStatus", "MarSt"], ["NetWorth", "NeWor"], ["LastName", "LNa"], ["MiddleInitial", "MidIni"], ["Age", "A"], ["FirstName", "FiNa"], ["PostalCode", "PosCo"], ["OwnOrRentFlag", "OwORFl"], ["Gender", null], ["AddressLine2", null], ["City", null], ["State", null], ["Country", null]]}