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:
| AgencyID   | Phone          |   Income |   NumberCars | NumberChildren   | MaritalStatus   |   Age |   CreditRating | OwnOrRentFlag   | Employer                       | NumberCreditCards   |         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: AgencyID
column_mappings: AgencyID
AgencyID
output: {"column_mappings": [["AgencyID", "AgencyID"], ["LastName", null], ["FirstName", null], ["MiddleInitial", null], ["Gender", null], ["AddressLine1", null], ["AddressLine2", null], ["PostalCode", null], ["City", null], ["State", null], ["Country", null]]}