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   |   Income | City          | OwnOrRentFlag   | FirstName   | LastName   | MiddleInitial   | Gender   | AddressLine1         | AddressLine2   | PostalCode   | State                | Country                  | Phone          |
|:-----------|---------:|:--------------|:----------------|:------------|:-----------|:----------------|:---------|:---------------------|:---------------|:-------------|:---------------------|:-------------------------|:---------------|
| PEL0       |   362473 | Fai4banks     | O               | Netyi       | PELLzND    |                 | f        | 21847 olympia street |                | T6b 1i1      | MA                   | United States of America | 1-712-522-6088 |
| LED1       |   229631 | Quebrc        | U               | 6RUDY       | LExUC      |                 | F        | 245 congress court   | APT. 624       | 77281        | PA                   | United States of America | 1-626-426-4298 |
| lat2       |   273809 | Henverson     | O               | irepand     | latof      |                 |          | 6517 frailing west   |                | 91355        | Alberta              | United States of America | 1-524-787-8784 |
| RUD3       |   152307 | Salrm         | O               | Mksti       | RUDvICK    |                 |          | 11449 blalock park   |                | 36615        | AR                   | Canada                   | 1-741-997-1688 |
| JAY4       |   210915 | Topedo        | O               | sarega      | uAYAMANNE  | M               | f        | 18354 dodd court     | Apt. 619       | t6a 1i3      | OR                   | Canada                   | 1-002-194-1991 |
| tod5       |    98972 | Co4pusshristi | R               | 9aulette    | todo       | Z               | M        | 14117 roxboro street |                | A2b 1v3      | VA                   | United States of America | 1-441-371-7651 |
| Kan6       |   257142 | SaltLakex9ty  | O               | AMALITx     | Kamno      | R               | m        | 24697 FLORENCE WEST  |                | 49513        | OH                   | Canada                   | 1-957-940-5980 |
| Din7       |   395525 | Briwneville   | U               | Ernrsto     | winkel     | Z               |          | 6488 applewood drive |                | M5d 1v6      | Prince Edward Island | United States of America | 1-768-633-4096 |
| Thi8       |   160977 | Eacondido     | O               | Toby        | rhibodeakx |                 |          | 17404 gale court     |                | V6c 1q1      | NV                   | United States of America | 1-107-689-2155 |
| May9       |   473254 | LosAngslew    | O               | evabgelia   | Mayo       |                 |          | 15913 alexis street  |                | 99716        | Ontario              | United States of America | 1-173-594-6096 |

TableB:
| prospect_AgencyID   |   prospect_Income | prospect_City   | prospect_OwnOrRentFlag   | prospect_FirstName          | prospect_LastName             |   prospect_NumberCars | prospect_NumberChildren   | prospect_MaritalStatus   |   prospect_Age |   prospect_CreditRating | prospect_Employer              | prospect_NumberCreditCards   |   prospect_NetWorth |
|:--------------------|------------------:|:----------------|:-------------------------|:----------------------------|:------------------------------|----------------------:|:--------------------------|:-------------------------|---------------:|------------------------:|:-------------------------------|:-----------------------------|--------------------:|
| Iok7501             |             94490 | Baltimore       | U                        | wbwsqgtaa                   | Iokwiqojocjanndatkdzgymym     |                     3 |                           | U                        |              7 |                     580 | FM Global                      |                              |    321776           |
| tia7502             |              7037 | Kitchener       | R                        | QGJWCPAPZMWHYHZTNOYSSOQBI   | tiabxgseasiibxakctfzhfwotp    |                     4 | 4.0                       | S                        |             48 |                     683 | MGIC Investment                | 2.0                          |         2.29232e+06 |
| AOI7503             |            419269 | Saint John      | O                        | BHGXDDPUMBESLQMNEPREPTZNNKM | AOIWIWTIHIXOJ                 |                     1 | 5.0                       | M                        |             14 |                     411 | Ross Stores                    | 2.0                          |    969707           |
| PJQ7504             |             76681 | Berkeley        | U                        | Xgnvppcxgfnmawlupgfa        | PJQSPMBUHYQKBOZ               |                     4 | 5.0                       | W                        |             29 |                     818 |                                | 9.0                          |         3.89946e+06 |
| SDV7505             |            209116 | Missoula        | R                        | Tfiozpstcftslqtwkgngiiwo    | SDVLJWXENNGWCQMIW             |                     2 | 4.0                       | U                        |             69 |                     370 | Alliance One International     | 7.0                          |         3.74922e+06 |
| Hga7506             |            212203 | Salinas         | O                        | fbcahlrhhjoslfzqvvwwvhk     | Hgakmykzeunwkiaxayulpwyxrcuev |                     0 | 0.0                       | U                        |             47 |                     833 | Sally Beauty Holdings          | 6.0                          |         3.65853e+06 |
| Beo7507             |             42018 | San Jose        | U                        | Dcgkohfcwyoaxckalqnkrzwq    | Beotomyndkiqryllkvpavllytov   |                     5 | 5.0                       | M                        |              0 |                     536 | Wisconsin Energy               | 2.0                          |         1.73846e+06 |
| Qum7508             |             90446 | Cleveland       | R                        | Vmnmcsinflxxmmifydckncc     | Qumxrssnd                     |                     0 | 0.0                       | S                        |             46 |                     775 | Carpenter Technology           | 0.0                          |         3.3073e+06  |
| Hud7509             |             16274 | Huntington      | R                        | Vrkbkkxkddtximspigmlbwzt    | Hudlpfwjagzbnznyhamjkhbf      |                     1 | 1.0                       | M                        |              6 |                     765 | Liberty Mutual Insurance Group | 3.0                          |         1.81642e+06 |
| jba7510             |             22215 | Paterson        | O                        | RMWCTFTLSVTMCBI             | jbabemsfwdyeihxq              |                     5 | 2.0                       | M                        |             22 |                     555 | Black & Decker                 | 6.0                          |         2.59925e+06 |



source_headers: AgencyID
Income
City
OwnOrRentFlag
FirstName
LastName
target_headers: prospect_AgencyID
prospect_Income
prospect_City
prospect_OwnOrRentFlag
prospect_FirstName
prospect_LastName
column_mappings: AgencyID
prospect_AgencyID
Income
prospect_Income
City
prospect_City
OwnOrRentFlag
prospect_OwnOrRentFlag
FirstName
prospect_FirstName
LastName
prospect_LastName
output: {"column_mappings": [["AgencyID", "prospect_AgencyID"], ["Income", "prospect_Income"], ["City", "prospect_City"], ["OwnOrRentFlag", "prospect_OwnOrRentFlag"], ["FirstName", "prospect_FirstName"], ["LastName", "prospect_LastName"], ["MiddleInitial", null], ["Gender", null], ["AddressLine1", null], ["AddressLine2", null], ["PostalCode", null], ["State", null], ["Country", null], ["Phone", null]]}