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   | MaritalStatus   | OwnOrRentFlag   |    NetWorth | NumberChildren   | City          | MiddleInitial   | Phone          | Gender   | CreditRating   | NumberCars   | NumberCreditCards   | Age   | Country               | PostalCode   | LastName   | FirstName   | AddressLine1         |
|:-----------|:----------------|:----------------|------------:|:-----------------|:--------------|:----------------|:---------------|:---------|:---------------|:-------------|:--------------------|:------|:----------------------|:-------------|:-----------|:------------|:---------------------|
| PEL0       | W               | O               | 2.3861e+06  | 3.0              | Fwirbanks     |                 | 1 712 522 6088 | f        | 668.0          |              |                     | 31.0  | UbutedStatesofAm2fica | T6n1i1       | PELLAND    | Netti       | 21847 olympia street |
| LED1       | U               | U               | 3.86928e+06 | 0.0              | Quebes        |                 | 1 626 426 4298 | F        | 607.0          | 1.0          | 5.0                 | 53.0  | UgitedStatesobxmetica | 77281        | LEDUC      | TRUDY       | 245 congress court   |
| lat2       | S               | O               | 2.27022e+06 | 4.0              | Hehderson     |                 | 1 524 787 8784 |          | 410.0          | 5.0          | 7.0                 |       | UnitesStatesogxmetica | 91355        | latif      | ireland     | 6517 frailing west   |
| RUD3       | W               | O               | 3.47177e+06 | 1.0              | Sapem         |                 | 1 741 997 1688 |          |                | 1.0          | 5.0                 | 51.0  | Cxnada                | 36615        | RUDDICK    | Misti       | 11449 blalock park   |
| JAY4       | M               | O               | 3.3989e+06  | 1.0              | Toledk        | M               | 1 002 194 1991 | f        | 681.0          | 6.0          | 3.0                 | 52.0  | Cabada                | t6awi3       | JAYAMANNE  | sarena      | 18354 dodd court     |
| tod5       | M               | R               | 6.59476e+06 | 1.0              | CoepuaChristi | Z               | 1 441 371 7651 | M        | 452.0          | 2.0          | 5.0                 | 34.0  | UhitesSta4esofAnerica | A2bqv3       | todo       | Paulette    | 14117 roxboro street |
| Kan6       |                 | O               | 4.6606e+06  | 1.0              | SaltLakesi6y  | R               | 1 957 940 5980 | m        | 430.0          | 6.0          | 4.0                 | 8.0   | Cqnada                | 49513        | Kanno      | AMALITA     | 24697 FLORENCE WEST  |
| Din7       | M               | U               | 4.74664e+06 | 3.0              | nrownsviole   | Z               | 1 768 633 4096 |          | 408.0          | 5.0          | 6.0                 | 32.0  | Uni6efwta5esofAmerica | M5d1b6       | Dinkel     | Ernesto     | 6488 applewood drive |
| Thi8       | U               | O               | 4.09901e+06 |                  | Escondidl     |                 | 1 107 689 2155 |          | 438.0          | 6.0          | 2.0                 | 53.0  | 6nitedqtatesifAmerjca | V7c1q1       | Thibodeaux | Toby        | 17404 gale court     |
| May9       | M               | O               | 1.13836e+06 | 1.0              | LosAngepws    |                 | 1 173 594 6096 |          | 723.0          | 5.0          |                     | 128.0 | UnitecdtxtesofAmetica | 99716        | Mayo       | evangelia   | 15913 alexis street  |

TableB:
| AgencyID   | MaritalStatus   | OwnOrRentFlag   |         NetWorth | NumberChildren   | City       | MiddleInitial   | Phone          | Gender   |   CreditRating |   NumberCars | NumberCreditCards   |   Age | Country                  | PostalCode   | AddressLine2                                                      | State   |   Income | Employer                       |
|:-----------|:----------------|:----------------|-----------------:|:-----------------|:-----------|:----------------|:---------------|:---------|---------------:|-------------:|:--------------------|------:|:-------------------------|:-------------|:------------------------------------------------------------------|:--------|---------:|:-------------------------------|
| Iok7501    | U               | U               | 321776           |                  | Baltimore  | n               | 1-637-119-9996 |          |            580 |            3 |                     |     7 | United States of America | Guudshirvcu  | GKOIKEZZMQTPQUQZLSAUUMVBDPAXTWNWSXTYJYQ                           | MO      |    94490 | FM Global                      |
| tia7502    | S               | R               |      2.29232e+06 | 4.0              | Kitchener  |                 | 1-560-405-0048 | M        |            683 |            4 | 2.0                 |    48 | Canada                   | wyggjewbe    | ocmgcvnexhqhgoyrwpkgaopthdvandlzaaleqccjpjkbirtcqvorobgskhtlgndvn | TX      |     7037 | MGIC Investment                |
| AOI7503    | M               | O               | 969707           | 5.0              | Saint John | u               | 1-261-306-5079 |          |            411 |            1 | 2.0                 |    14 |                          | YMZRQICUTHT  | Cdrxeolwrrxmwmhgexvcstvzz                                         | CT      |   419269 | Ross Stores                    |
| PJQ7504    | W               | U               |      3.89946e+06 | 5.0              | Berkeley   |                 | 1-642-299-6655 | m        |            818 |            4 | 9.0                 |    29 | United States of America | Bcjuycmcen   | WKSBVOFGJHQGAEKUYRZHHPH                                           | UT      |    76681 |                                |
| SDV7505    | U               | R               |      3.74922e+06 | 4.0              | Missoula   |                 |                |          |            370 |            2 | 7.0                 |    69 | United States of America | Nujxguyehf   | skxijfqpzshmts                                                    | RI      |   209116 | Alliance One International     |
| Hga7506    | U               | O               |      3.65853e+06 | 0.0              | Salinas    | F               | 1-388-257-4273 | F        |            833 |            0 | 6.0                 |    47 |                          | Neigswk      | ZETOHHRKIBHCQCKZODIXJJSXCFY                                       | DE      |   212203 | Sally Beauty Holdings          |
| Beo7507    | M               | U               |      1.73846e+06 | 5.0              | San Jose   | D               |                | M        |            536 |            5 | 2.0                 |     0 | Canada                   | WNCEOQPLW    | LJXAXKUJXQBGWBHJJAAM                                              | NM      |    42018 | Wisconsin Energy               |
| Qum7508    | S               | R               |      3.3073e+06  | 0.0              | Cleveland  |                 | 1-632-118-1891 |          |            775 |            0 | 0.0                 |    46 | United States of America | Cskdwtkf     | Jmlgjkjbqhrudrkqrm                                                | WV      |    90446 | Carpenter Technology           |
| Hud7509    | M               | R               |      1.81642e+06 | 1.0              | Huntington | v               | 1-853-806-4986 |          |            765 |            1 | 3.0                 |     6 | United States of America | tcxswloetdt  | Qqcilgblxyikgr                                                    | NH      |    16274 | Liberty Mutual Insurance Group |
| jba7510    | M               | O               |      2.59925e+06 | 2.0              | Paterson   |                 | 1-220-687-2027 | m        |            555 |            5 | 6.0                 |    22 | Canada                   | Fkpemasoukih | Ahtohqjfzfarn                                                     | WY      |    22215 | Black & Decker                 |



source_headers: AgencyID
MaritalStatus
OwnOrRentFlag
NetWorth
NumberChildren
City
MiddleInitial
Phone
Gender
CreditRating
NumberCars
NumberCreditCards
Age
Country
PostalCode
target_headers: AgencyID
MaritalStatus
OwnOrRentFlag
NetWorth
NumberChildren
City
MiddleInitial
Phone
Gender
CreditRating
NumberCars
NumberCreditCards
Age
Country
PostalCode
column_mappings: AgencyID
AgencyID
MaritalStatus
MaritalStatus
OwnOrRentFlag
OwnOrRentFlag
NetWorth
NetWorth
NumberChildren
NumberChildren
City
City
MiddleInitial
MiddleInitial
Phone
Phone
Gender
Gender
CreditRating
CreditRating
NumberCars
NumberCars
NumberCreditCards
NumberCreditCards
Age
Age
Country
Country
PostalCode
PostalCode
output: {"column_mappings": [["AgencyID", "AgencyID"], ["MaritalStatus", "MaritalStatus"], ["OwnOrRentFlag", "OwnOrRentFlag"], ["NetWorth", "NetWorth"], ["NumberChildren", "NumberChildren"], ["City", "City"], ["MiddleInitial", "MiddleInitial"], ["Phone", "Phone"], ["Gender", "Gender"], ["CreditRating", "CreditRating"], ["NumberCars", "NumberCars"], ["NumberCreditCards", "NumberCreditCards"], ["Age", "Age"], ["Country", "Country"], ["PostalCode", "PostalCode"], ["LastName", null], ["FirstName", null], ["AddressLine1", null]]}