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   | LastName   | FirstName   | MiddleInitial   | Gender   | AddressLine1         | AddressLine2   | PostalCode   | City           | State                | Country                  |
|:-----------|:-----------|:------------|:----------------|:---------|:---------------------|:---------------|:-------------|:---------------|:---------------------|:-------------------------|
| PEL0       | PELLAND    | Netti       |                 | f        | 21847 olympia street |                | T6b 1i1      | Fairbanks      | MA                   | United States of America |
| LED1       | LEDUC      | TRUDY       |                 | F        | 245 congress court   | APT. 624       | 77281        | Quebec         | PA                   | United States of America |
| lat2       | latif      | ireland     |                 |          | 6517 frailing west   |                | 91355        | Henderson      | Alberta              | United States of America |
| RUD3       | RUDDICK    | Misti       |                 |          | 11449 blalock park   |                | 36615        | Salem          | AR                   | Canada                   |
| JAY4       | JAYAMANNE  | sarena      | M               | f        | 18354 dodd court     | Apt. 619       | t6a 1i3      | Toledo         | OR                   | Canada                   |
| tod5       | todo       | Paulette    | Z               | M        | 14117 roxboro street |                | A2b 1v3      | Corpus Christi | VA                   | United States of America |
| Kan6       | Kanno      | AMALITA     | R               | m        | 24697 FLORENCE WEST  |                | 49513        | Salt Lake City | OH                   | Canada                   |
| Din7       | Dinkel     | Ernesto     | Z               |          | 6488 applewood drive |                | M5d 1v6      | Brownsville    | Prince Edward Island | United States of America |
| Thi8       | Thibodeaux | Toby        |                 |          | 17404 gale court     |                | V6c 1q1      | Escondido      | NV                   | United States of America |
| May9       | Mayo       | evangelia   |                 |          | 15913 alexis street  |                | 99716        | Los Angeles    | Ontario              | United States of America |

TableB:
| prospect_AgencyID   | prospect_Phone   |   prospect_Income |   prospect_NumberCars | prospect_NumberChildren   | prospect_MaritalStatus   |   prospect_Age |   prospect_CreditRating | prospect_OwnOrRentFlag   | prospect_Employer              | prospect_NumberCreditCards   |   prospect_NetWorth |
|:--------------------|:-----------------|------------------:|----------------------:|:--------------------------|:-------------------------|---------------:|------------------------:|:-------------------------|:-------------------------------|:-----------------------------|--------------------:|
| Iok7501             | 1-637-119-9996   |             94490 |                     3 |                           | U                        |              7 |                     580 | U                        | FM Global                      |                              |    321776           |
| tia7502             | 1-560-405-0048   |              7037 |                     4 | 4.0                       | S                        |             48 |                     683 | R                        | MGIC Investment                | 2.0                          |         2.29232e+06 |
| AOI7503             | 1-261-306-5079   |            419269 |                     1 | 5.0                       | M                        |             14 |                     411 | O                        | Ross Stores                    | 2.0                          |    969707           |
| PJQ7504             | 1-642-299-6655   |             76681 |                     4 | 5.0                       | W                        |             29 |                     818 | U                        |                                | 9.0                          |         3.89946e+06 |
| SDV7505             |                  |            209116 |                     2 | 4.0                       | U                        |             69 |                     370 | R                        | Alliance One International     | 7.0                          |         3.74922e+06 |
| Hga7506             | 1-388-257-4273   |            212203 |                     0 | 0.0                       | U                        |             47 |                     833 | O                        | Sally Beauty Holdings          | 6.0                          |         3.65853e+06 |
| Beo7507             |                  |             42018 |                     5 | 5.0                       | M                        |              0 |                     536 | U                        | Wisconsin Energy               | 2.0                          |         1.73846e+06 |
| Qum7508             | 1-632-118-1891   |             90446 |                     0 | 0.0                       | S                        |             46 |                     775 | R                        | Carpenter Technology           | 0.0                          |         3.3073e+06  |
| Hud7509             | 1-853-806-4986   |             16274 |                     1 | 1.0                       | M                        |              6 |                     765 | R                        | Liberty Mutual Insurance Group | 3.0                          |         1.81642e+06 |
| jba7510             | 1-220-687-2027   |             22215 |                     5 | 2.0                       | M                        |             22 |                     555 | O                        | Black & Decker                 | 6.0                          |         2.59925e+06 |



source_headers: AgencyID
target_headers: prospect_AgencyID
column_mappings: AgencyID
prospect_AgencyID
output: {"column_mappings": [["AgencyID", "prospect_AgencyID"], ["LastName", null], ["FirstName", null], ["MiddleInitial", null], ["Gender", null], ["AddressLine1", null], ["AddressLine2", null], ["PostalCode", null], ["City", null], ["State", null], ["Country", null]]}