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   | MiddleInitial   | CreditRating   | State                | LastName   |   Income | NumberCreditCards   | City           | AddressLine2   | MaritalStatus   | NumberChildren   | Age   | Employer                 | Country                  | AddressLine1         | FirstName   | Gender   | PostalCode   |
|:-----------|:----------------|:---------------|:---------------------|:-----------|---------:|:--------------------|:---------------|:---------------|:----------------|:-----------------|:------|:-------------------------|:-------------------------|:---------------------|:------------|:---------|:-------------|
| PEL0       |                 | 760.0          | MA                   | PELLAND    |   368776 |                     | Fairbanks      |                | W               | 3.0              | 20.0  | Brink's                  | United States of America | 21847 olympia street | Netti       | f        | T6b 1i1      |
| LED1       |                 | 555.0          | PA                   | LEDUC      |   177967 | 6.0                 | Quebec         | APT. 624       | U               | 1.0              | 3.0   |                          | United States of America | 245 congress court   | TRUDY       | F        | 77281        |
| lat2       |                 | 566.0          | Alberta              | latif      |   321772 | 6.0                 | Henderson      |                | S               | 1.0              |       |                          | United States of America | 6517 frailing west   | ireland     |          | 91355        |
| RUD3       |                 |                | AR                   | RUDDICK    |    25449 | 3.0                 | Salem          |                | W               | 1.0              | 77.0  | Air Products & Chemicals | Canada                   | 11449 blalock park   | Misti       |          | 36615        |
| JAY4       | M               | 815.0          | OR                   | JAYAMANNE  |   166567 | 4.0                 | Toledo         | Apt. 619       | M               | 3.0              | 21.0  | Oshkosh                  | Canada                   | 18354 dodd court     | sarena      | f        | t6a 1i3      |
| tod5       | Z               | 333.0          | VA                   | todo       |    43631 | 10.0                | Corpus Christi |                | M               | 4.0              | 77.0  |                          | United States of America | 14117 roxboro street | Paulette    | M        | A2b 1v3      |
| Kan6       | R               | 528.0          | OH                   | Kanno      |   466230 | 1.0                 | Salt Lake City |                |                 | 0.0              | 23.0  | VeraSun Energy           | Canada                   | 24697 FLORENCE WEST  | AMALITA     | m        | 49513        |
| Din7       | Z               | 680.0          | Prince Edward Island | Dinkel     |   420243 | 7.0                 | Brownsville    |                | M               | 2.0              | 9.0   | IDT                      | United States of America | 6488 applewood drive | Ernesto     |          | M5d 1v6      |
| Thi8       |                 | 761.0          | NV                   | Thibodeaux |   141862 | 10.0                | Escondido      |                | U               |                  | 63.0  | Adams Resources & Energy | United States of America | 17404 gale court     | Toby        |          | V6c 1q1      |
| May9       |                 | 416.0          | Ontario              | Mayo       |   402011 |                     | Los Angeles    |                | M               | 2.0              | 32.0  | MGIC Investment          | United States of America | 15913 alexis street  | evangelia   |          | 99716        |

TableB:
| AgID    | MidInit   |   CrRat | Sta   | LNa                           |    Inc | NuCreCar   | Ci         | AdLi2                                                             | MaSta   | NuCh   |   Ag | Emp                            | Coun                     | AddrL1                                                                      | Ph             |   NumCa | OORF   |             NeWo |
|:--------|:----------|--------:|:------|:------------------------------|-------:|:-----------|:-----------|:------------------------------------------------------------------|:--------|:-------|-----:|:-------------------------------|:-------------------------|:----------------------------------------------------------------------------|:---------------|--------:|:-------|-----------------:|
| Iok7501 | n         |     580 | MO    | Iokwiqojocjanndatkdzgymym     |  94490 |            | Baltimore  | GKOIKEZZMQTPQUQZLSAUUMVBDPAXTWNWSXTYJYQ                           | U       |        |    7 | FM Global                      | United States of America | jsurlejkapodmkaccruslfkcqmbcquahsyweopxdxknl                                | 1-637-119-9996 |       3 | U      | 321776           |
| tia7502 |           |     683 | TX    | tiabxgseasiibxakctfzhfwotp    |   7037 | 2.0        | Kitchener  | ocmgcvnexhqhgoyrwpkgaopthdvandlzaaleqccjpjkbirtcqvorobgskhtlgndvn | S       | 4.0    |   48 | MGIC Investment                | Canada                   | Ggptcoorkpeeigqzevhwhjdxdfbrmidyxsugikhgmuvvpcptuphjlgmipvhrrsgepibdupa     | 1-560-405-0048 |       4 | R      |      2.29232e+06 |
| AOI7503 | u         |     411 | CT    | AOIWIWTIHIXOJ                 | 419269 | 2.0        | Saint John | Cdrxeolwrrxmwmhgexvcstvzz                                         | M       | 5.0    |   14 | Ross Stores                    |                          | Gpcvjzlwouagawronludakqiuhbrbpbkkltrnlkoezgwcawpayfsnejpkmisnryphbtztbfemoy | 1-261-306-5079 |       1 | O      | 969707           |
| PJQ7504 |           |     818 | UT    | PJQSPMBUHYQKBOZ               |  76681 | 9.0        | Berkeley   | WKSBVOFGJHQGAEKUYRZHHPH                                           | W       | 5.0    |   29 |                                | United States of America | Yxkhkvrobywpdczvwmjgxvnuduavcpyiuceglhaskahgyxqpqjbdroyojouqkzfwvfpsddisy   | 1-642-299-6655 |       4 | U      |      3.89946e+06 |
| SDV7505 |           |     370 | RI    | SDVLJWXENNGWCQMIW             | 209116 | 7.0        | Missoula   | skxijfqpzshmts                                                    | U       | 4.0    |   69 | Alliance One International     | United States of America | Ddsarhvraiskwmrddncqwvzkmjmxtgnpbtgyop                                      |                |       2 | R      |      3.74922e+06 |
| Hga7506 | F         |     833 | DE    | Hgakmykzeunwkiaxayulpwyxrcuev | 212203 | 6.0        | Salinas    | ZETOHHRKIBHCQCKZODIXJJSXCFY                                       | U       | 0.0    |   47 | Sally Beauty Holdings          |                          | Ajpkrmtlcbdzr                                                               | 1-388-257-4273 |       0 | O      |      3.65853e+06 |
| Beo7507 | D         |     536 | NM    | Beotomyndkiqryllkvpavllytov   |  42018 | 2.0        | San Jose   | LJXAXKUJXQBGWBHJJAAM                                              | M       | 5.0    |    0 | Wisconsin Energy               | Canada                   | PKSTPUXQIRGWSXSKWRAJTTNBAOLQKAAJFAPGWIHBWVCHOXLE                            |                |       5 | U      |      1.73846e+06 |
| Qum7508 |           |     775 | WV    | Qumxrssnd                     |  90446 | 0.0        | Cleveland  | Jmlgjkjbqhrudrkqrm                                                | S       | 0.0    |   46 | Carpenter Technology           | United States of America | gyhrpdbplficrfirmtavitgpfmhnnhvsuoqwxrulxlqrdqkzshqovucentrxlakgkpwbrgtd    | 1-632-118-1891 |       0 | R      |      3.3073e+06  |
| Hud7509 | v         |     765 | NH    | Hudlpfwjagzbnznyhamjkhbf      |  16274 | 3.0        | Huntington | Qqcilgblxyikgr                                                    | M       | 1.0    |    6 | Liberty Mutual Insurance Group | United States of America | GJTWIDOQOAPDVVULJGOOJBWTTANDJXOCQHWWZAGLGMJQXJOMWFTFVGXIH                   | 1-853-806-4986 |       1 | R      |      1.81642e+06 |
| jba7510 |           |     555 | WY    | jbabemsfwdyeihxq              |  22215 | 6.0        | Paterson   | Ahtohqjfzfarn                                                     | M       | 2.0    |   22 | Black & Decker                 | Canada                   | Ycltsquohmuugxihqyluhkoy                                                    | 1-220-687-2027 |       5 | O      |      2.59925e+06 |



source_headers: AgencyID
MiddleInitial
CreditRating
State
LastName
Income
NumberCreditCards
City
AddressLine2
MaritalStatus
NumberChildren
Age
Employer
Country
AddressLine1
target_headers: AgID
MidInit
CrRat
Sta
LNa
Inc
NuCreCar
Ci
AdLi2
MaSta
NuCh
Ag
Emp
Coun
AddrL1
column_mappings: AgencyID
AgID
MiddleInitial
MidInit
CreditRating
CrRat
State
Sta
LastName
LNa
Income
Inc
NumberCreditCards
NuCreCar
City
Ci
AddressLine2
AdLi2
MaritalStatus
MaSta
NumberChildren
NuCh
Age
Ag
Employer
Emp
Country
Coun
AddressLine1
AddrL1
output: {"column_mappings": [["AgencyID", "AgID"], ["MiddleInitial", "MidInit"], ["CreditRating", "CrRat"], ["State", "Sta"], ["LastName", "LNa"], ["Income", "Inc"], ["NumberCreditCards", "NuCreCar"], ["City", "Ci"], ["AddressLine2", "AdLi2"], ["MaritalStatus", "MaSta"], ["NumberChildren", "NuCh"], ["Age", "Ag"], ["Employer", "Emp"], ["Country", "Coun"], ["AddressLine1", "AddrL1"], ["FirstName", null], ["Gender", null], ["PostalCode", null]]}