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   | State              | City          | MaritalStatus   | NumberCars   | Phone          | Employer             | Age   | CreditRating   | Country               |         NetWorth | LastName   | FirstName   | MiddleInitial   | Gender   | AddressLine1         |
|:-----------|:-------------------|:--------------|:----------------|:-------------|:---------------|:---------------------|:------|:---------------|:----------------------|-----------------:|:-----------|:------------|:----------------|:---------|:---------------------|
| PEL0       | MA                 | Fairbanls     | W               |              | 1 712 522 6088 | Bdinks               | 74.0  | 689.0          | Un7r2dStatesofAmedica |      2.71754e+06 | PELLAND    | Netti       |                 | f        | 21847 olympia street |
| LED1       | PA                 | Qjebec        | U               | 1.0          | 1 626 426 4298 |                      | 41.0  | 917.0          | UnitwdStayexofAm4rica |      2.84639e+06 | LEDUC      | TRUDY       |                 | F        | 245 congress court   |
| lat2       | Alnerta            | Henderspn     | S               | 2.0          | 1 524 787 8784 |                      |       | 878.0          | UjitedStat4spfAkerica |      2.64204e+06 | latif      | ireland     |                 |          | 6517 frailing west   |
| RUD3       | AR                 | Salsm         | W               | 0.0          | 1 741 997 1688 | AirProd7ctsxhemlcqls | 64.0  |                | Canadq                |      4.2802e+06  | RUDDICK    | Misti       |                 |          | 11449 blalock park   |
| JAY4       | OR                 | Tolddo        | M               | 2.0          | 1 002 194 1991 | Oshkksh              | 101.0 | 720.0          | Camada                | 661085           | JAYAMANNE  | sarena      | M               | f        | 18354 dodd court     |
| tod5       | VA                 | CorpusChriwtl | M               | 0.0          | 1 441 371 7651 |                      | 65.0  | 957.0          | UnitedSta6ssofAmsricx |      3.6232e+06  | todo       | Paulette    | Z               | M        | 14117 roxboro street |
| Kan6       | OH                 | SaltLakexitu  |                 | 0.0          | 1 957 940 5980 | VeraSugEnergh        | 53.0  | 859.0          | Canadx                |      2.51291e+06 | Kanno      | AMALITA     | R               | m        | 24697 FLORENCE WEST  |
| Din7       | PrincrEdwagdIslqnd | Bro3nsvulle   | M               | 1.0          | 1 768 633 4096 | IDT                  | 46.0  | 1098.0         | UnltsdStatesofAhe4ica |      6.29039e+06 | Dinkel     | Ernesto     | Z               |          | 6488 applewood drive |
| Thi8       | NV                 | Escondid0     | U               | 2.0          | 1 107 689 2155 | AdamsResohfc3sEbergy | 41.0  | 1355.0         | UnifedStarexofAkerica |      1.85651e+06 | Thibodeaux | Toby        |                 |          | 17404 gale court     |
| May9       | Onta5io            | Losqhgeles    | M               | 1.0          | 1 173 594 6096 | kGICIncestment       | 21.0  | 717.0          | Unit4dqtwtesofAmeroca |      3.46663e+06 | Mayo       | evangelia   |                 |          | 15913 alexis street  |

TableB:
| prospect_AgencyID   | prospect_State   | prospect_City   | prospect_MaritalStatus   |   prospect_NumberCars | prospect_Phone   | prospect_Employer              |   prospect_Age |   prospect_CreditRating | prospect_Country         |   prospect_NetWorth | prospect_AddressLine2                                             | prospect_PostalCode   |   prospect_Income | prospect_NumberChildren   | prospect_OwnOrRentFlag   | prospect_NumberCreditCards   |
|:--------------------|:-----------------|:----------------|:-------------------------|----------------------:|:-----------------|:-------------------------------|---------------:|------------------------:|:-------------------------|--------------------:|:------------------------------------------------------------------|:----------------------|------------------:|:--------------------------|:-------------------------|:-----------------------------|
| Iok7501             | MO               | Baltimore       | U                        |                     3 | 1-637-119-9996   | FM Global                      |              7 |                     580 | United States of America |    321776           | GKOIKEZZMQTPQUQZLSAUUMVBDPAXTWNWSXTYJYQ                           | Guudshirvcu           |             94490 |                           | U                        |                              |
| tia7502             | TX               | Kitchener       | S                        |                     4 | 1-560-405-0048   | MGIC Investment                |             48 |                     683 | Canada                   |         2.29232e+06 | ocmgcvnexhqhgoyrwpkgaopthdvandlzaaleqccjpjkbirtcqvorobgskhtlgndvn | wyggjewbe             |              7037 | 4.0                       | R                        | 2.0                          |
| AOI7503             | CT               | Saint John      | M                        |                     1 | 1-261-306-5079   | Ross Stores                    |             14 |                     411 |                          |    969707           | Cdrxeolwrrxmwmhgexvcstvzz                                         | YMZRQICUTHT           |            419269 | 5.0                       | O                        | 2.0                          |
| PJQ7504             | UT               | Berkeley        | W                        |                     4 | 1-642-299-6655   |                                |             29 |                     818 | United States of America |         3.89946e+06 | WKSBVOFGJHQGAEKUYRZHHPH                                           | Bcjuycmcen            |             76681 | 5.0                       | U                        | 9.0                          |
| SDV7505             | RI               | Missoula        | U                        |                     2 |                  | Alliance One International     |             69 |                     370 | United States of America |         3.74922e+06 | skxijfqpzshmts                                                    | Nujxguyehf            |            209116 | 4.0                       | R                        | 7.0                          |
| Hga7506             | DE               | Salinas         | U                        |                     0 | 1-388-257-4273   | Sally Beauty Holdings          |             47 |                     833 |                          |         3.65853e+06 | ZETOHHRKIBHCQCKZODIXJJSXCFY                                       | Neigswk               |            212203 | 0.0                       | O                        | 6.0                          |
| Beo7507             | NM               | San Jose        | M                        |                     5 |                  | Wisconsin Energy               |              0 |                     536 | Canada                   |         1.73846e+06 | LJXAXKUJXQBGWBHJJAAM                                              | WNCEOQPLW             |             42018 | 5.0                       | U                        | 2.0                          |
| Qum7508             | WV               | Cleveland       | S                        |                     0 | 1-632-118-1891   | Carpenter Technology           |             46 |                     775 | United States of America |         3.3073e+06  | Jmlgjkjbqhrudrkqrm                                                | Cskdwtkf              |             90446 | 0.0                       | R                        | 0.0                          |
| Hud7509             | NH               | Huntington      | M                        |                     1 | 1-853-806-4986   | Liberty Mutual Insurance Group |              6 |                     765 | United States of America |         1.81642e+06 | Qqcilgblxyikgr                                                    | tcxswloetdt           |             16274 | 1.0                       | R                        | 3.0                          |
| jba7510             | WY               | Paterson        | M                        |                     5 | 1-220-687-2027   | Black & Decker                 |             22 |                     555 | Canada                   |         2.59925e+06 | Ahtohqjfzfarn                                                     | Fkpemasoukih          |             22215 | 2.0                       | O                        | 6.0                          |



source_headers: AgencyID
State
City
MaritalStatus
NumberCars
Phone
Employer
Age
CreditRating
Country
NetWorth
target_headers: prospect_AgencyID
prospect_State
prospect_City
prospect_MaritalStatus
prospect_NumberCars
prospect_Phone
prospect_Employer
prospect_Age
prospect_CreditRating
prospect_Country
prospect_NetWorth
column_mappings: AgencyID
prospect_AgencyID
State
prospect_State
City
prospect_City
MaritalStatus
prospect_MaritalStatus
NumberCars
prospect_NumberCars
Phone
prospect_Phone
Employer
prospect_Employer
Age
prospect_Age
CreditRating
prospect_CreditRating
Country
prospect_Country
NetWorth
prospect_NetWorth
output: {"column_mappings": [["AgencyID", "prospect_AgencyID"], ["State", "prospect_State"], ["City", "prospect_City"], ["MaritalStatus", "prospect_MaritalStatus"], ["NumberCars", "prospect_NumberCars"], ["Phone", "prospect_Phone"], ["Employer", "prospect_Employer"], ["Age", "prospect_Age"], ["CreditRating", "prospect_CreditRating"], ["Country", "prospect_Country"], ["NetWorth", "prospect_NetWorth"], ["LastName", null], ["FirstName", null], ["MiddleInitial", null], ["Gender", null], ["AddressLine1", null]]}