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   | Age   |   Income | AddressLine1         | CreditRating   | NumberChildren   | Country                  | AddressLine2   |         NetWorth | OwnOrRentFlag   | Employer                 | LastName   | FirstName   | MiddleInitial   | Gender   | PostalCode   |
|:-----------|:------|---------:|:---------------------|:---------------|:-----------------|:-------------------------|:---------------|-----------------:|:----------------|:-------------------------|:-----------|:------------|:----------------|:---------|:-------------|
| PEL0       | 20.0  |   368776 | 21847 olympia street | 760.0          | 3.0              | United States of America |                |      1.05887e+06 | O               | Brink's                  | PELLAND    | Netti       |                 | f        | T6b 1i1      |
| LED1       | 3.0   |   177967 | 245 congress court   | 555.0          | 1.0              | United States of America | APT. 624       |      1.98818e+06 | U               |                          | LEDUC      | TRUDY       |                 | F        | 77281        |
| lat2       |       |   321772 | 6517 frailing west   | 566.0          | 1.0              | United States of America |                |      3.67313e+06 | O               |                          | latif      | ireland     |                 |          | 91355        |
| RUD3       | 77.0  |    25449 | 11449 blalock park   |                | 1.0              | Canada                   |                |      2.0059e+06  | O               | Air Products & Chemicals | RUDDICK    | Misti       |                 |          | 36615        |
| JAY4       | 21.0  |   166567 | 18354 dodd court     | 815.0          | 3.0              | Canada                   | Apt. 619       | 624736           | O               | Oshkosh                  | JAYAMANNE  | sarena      | M               | f        | t6a 1i3      |
| tod5       | 77.0  |    43631 | 14117 roxboro street | 333.0          | 4.0              | United States of America |                |      3.06462e+06 | R               |                          | todo       | Paulette    | Z               | M        | A2b 1v3      |
| Kan6       | 23.0  |   466230 | 24697 FLORENCE WEST  | 528.0          | 0.0              | Canada                   |                |      3.48913e+06 | O               | VeraSun Energy           | Kanno      | AMALITA     | R               | m        | 49513        |
| Din7       | 9.0   |   420243 | 6488 applewood drive | 680.0          | 2.0              | United States of America |                |      3.43074e+06 | U               | IDT                      | Dinkel     | Ernesto     | Z               |          | M5d 1v6      |
| Thi8       | 63.0  |   141862 | 17404 gale court     | 761.0          |                  | United States of America |                |      1.74361e+06 | O               | Adams Resources & Energy | Thibodeaux | Toby        |                 |          | V6c 1q1      |
| May9       | 32.0  |   402011 | 15913 alexis street  | 416.0          | 2.0              | United States of America |                | 216299           | O               | MGIC Investment          | Mayo       | evangelia   |                 |          | 99716        |

TableB:
| prospect_AgencyID   |   prospect_Age |   prospect_Income | prospect_AddressLine1                                                       |   prospect_CreditRating | prospect_NumberChildren   | prospect_Country         | prospect_AddressLine2                                             |   prospect_NetWorth | prospect_OwnOrRentFlag   | prospect_Employer              | prospect_City   | prospect_State   | prospect_Phone   |   prospect_NumberCars | prospect_MaritalStatus   | prospect_NumberCreditCards   |
|:--------------------|---------------:|------------------:|:----------------------------------------------------------------------------|------------------------:|:--------------------------|:-------------------------|:------------------------------------------------------------------|--------------------:|:-------------------------|:-------------------------------|:----------------|:-----------------|:-----------------|----------------------:|:-------------------------|:-----------------------------|
| Iok7501             |              7 |             94490 | jsurlejkapodmkaccruslfkcqmbcquahsyweopxdxknl                                |                     580 |                           | United States of America | GKOIKEZZMQTPQUQZLSAUUMVBDPAXTWNWSXTYJYQ                           |    321776           | U                        | FM Global                      | Baltimore       | MO               | 1-637-119-9996   |                     3 | U                        |                              |
| tia7502             |             48 |              7037 | Ggptcoorkpeeigqzevhwhjdxdfbrmidyxsugikhgmuvvpcptuphjlgmipvhrrsgepibdupa     |                     683 | 4.0                       | Canada                   | ocmgcvnexhqhgoyrwpkgaopthdvandlzaaleqccjpjkbirtcqvorobgskhtlgndvn |         2.29232e+06 | R                        | MGIC Investment                | Kitchener       | TX               | 1-560-405-0048   |                     4 | S                        | 2.0                          |
| AOI7503             |             14 |            419269 | Gpcvjzlwouagawronludakqiuhbrbpbkkltrnlkoezgwcawpayfsnejpkmisnryphbtztbfemoy |                     411 | 5.0                       |                          | Cdrxeolwrrxmwmhgexvcstvzz                                         |    969707           | O                        | Ross Stores                    | Saint John      | CT               | 1-261-306-5079   |                     1 | M                        | 2.0                          |
| PJQ7504             |             29 |             76681 | Yxkhkvrobywpdczvwmjgxvnuduavcpyiuceglhaskahgyxqpqjbdroyojouqkzfwvfpsddisy   |                     818 | 5.0                       | United States of America | WKSBVOFGJHQGAEKUYRZHHPH                                           |         3.89946e+06 | U                        |                                | Berkeley        | UT               | 1-642-299-6655   |                     4 | W                        | 9.0                          |
| SDV7505             |             69 |            209116 | Ddsarhvraiskwmrddncqwvzkmjmxtgnpbtgyop                                      |                     370 | 4.0                       | United States of America | skxijfqpzshmts                                                    |         3.74922e+06 | R                        | Alliance One International     | Missoula        | RI               |                  |                     2 | U                        | 7.0                          |
| Hga7506             |             47 |            212203 | Ajpkrmtlcbdzr                                                               |                     833 | 0.0                       |                          | ZETOHHRKIBHCQCKZODIXJJSXCFY                                       |         3.65853e+06 | O                        | Sally Beauty Holdings          | Salinas         | DE               | 1-388-257-4273   |                     0 | U                        | 6.0                          |
| Beo7507             |              0 |             42018 | PKSTPUXQIRGWSXSKWRAJTTNBAOLQKAAJFAPGWIHBWVCHOXLE                            |                     536 | 5.0                       | Canada                   | LJXAXKUJXQBGWBHJJAAM                                              |         1.73846e+06 | U                        | Wisconsin Energy               | San Jose        | NM               |                  |                     5 | M                        | 2.0                          |
| Qum7508             |             46 |             90446 | gyhrpdbplficrfirmtavitgpfmhnnhvsuoqwxrulxlqrdqkzshqovucentrxlakgkpwbrgtd    |                     775 | 0.0                       | United States of America | Jmlgjkjbqhrudrkqrm                                                |         3.3073e+06  | R                        | Carpenter Technology           | Cleveland       | WV               | 1-632-118-1891   |                     0 | S                        | 0.0                          |
| Hud7509             |              6 |             16274 | GJTWIDOQOAPDVVULJGOOJBWTTANDJXOCQHWWZAGLGMJQXJOMWFTFVGXIH                   |                     765 | 1.0                       | United States of America | Qqcilgblxyikgr                                                    |         1.81642e+06 | R                        | Liberty Mutual Insurance Group | Huntington      | NH               | 1-853-806-4986   |                     1 | M                        | 3.0                          |
| jba7510             |             22 |             22215 | Ycltsquohmuugxihqyluhkoy                                                    |                     555 | 2.0                       | Canada                   | Ahtohqjfzfarn                                                     |         2.59925e+06 | O                        | Black & Decker                 | Paterson        | WY               | 1-220-687-2027   |                     5 | M                        | 6.0                          |



source_headers: AgencyID
Age
Income
AddressLine1
CreditRating
NumberChildren
Country
AddressLine2
NetWorth
OwnOrRentFlag
Employer
target_headers: prospect_AgencyID
prospect_Age
prospect_Income
prospect_AddressLine1
prospect_CreditRating
prospect_NumberChildren
prospect_Country
prospect_AddressLine2
prospect_NetWorth
prospect_OwnOrRentFlag
prospect_Employer
column_mappings: AgencyID
prospect_AgencyID
Age
prospect_Age
Income
prospect_Income
AddressLine1
prospect_AddressLine1
CreditRating
prospect_CreditRating
NumberChildren
prospect_NumberChildren
Country
prospect_Country
AddressLine2
prospect_AddressLine2
NetWorth
prospect_NetWorth
OwnOrRentFlag
prospect_OwnOrRentFlag
Employer
prospect_Employer
output: {"column_mappings": [["AgencyID", "prospect_AgencyID"], ["Age", "prospect_Age"], ["Income", "prospect_Income"], ["AddressLine1", "prospect_AddressLine1"], ["CreditRating", "prospect_CreditRating"], ["NumberChildren", "prospect_NumberChildren"], ["Country", "prospect_Country"], ["AddressLine2", "prospect_AddressLine2"], ["NetWorth", "prospect_NetWorth"], ["OwnOrRentFlag", "prospect_OwnOrRentFlag"], ["Employer", "prospect_Employer"], ["LastName", null], ["FirstName", null], ["MiddleInitial", null], ["Gender", null], ["PostalCode", null]]}