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   | MaritalStatus   | NumberChildren   | Phone          | State                |   Income |         NetWorth | Gender   | FirstName   | CreditRating   | Employer                 | City           | MiddleInitial   | PostalCode   | Age   | LastName   | AddressLine1         | AddressLine2   |
|:-----------|:----------------|:-----------------|:---------------|:---------------------|---------:|-----------------:|:---------|:------------|:---------------|:-------------------------|:---------------|:----------------|:-------------|:------|:-----------|:---------------------|:---------------|
| PEL0       | W               | 3.0              | 1-712-522-6088 | MA                   |   368776 |      1.05887e+06 | f        | Netti       | 760.0          | Brink's                  | Fairbanks      |                 | T6b 1i1      | 20.0  | PELLAND    | 21847 olympia street |                |
| LED1       | U               | 1.0              | 1-626-426-4298 | PA                   |   177967 |      1.98818e+06 | F        | TRUDY       | 555.0          |                          | Quebec         |                 | 77281        | 3.0   | LEDUC      | 245 congress court   | APT. 624       |
| lat2       | S               | 1.0              | 1-524-787-8784 | Alberta              |   321772 |      3.67313e+06 |          | ireland     | 566.0          |                          | Henderson      |                 | 91355        |       | latif      | 6517 frailing west   |                |
| RUD3       | W               | 1.0              | 1-741-997-1688 | AR                   |    25449 |      2.0059e+06  |          | Misti       |                | Air Products & Chemicals | Salem          |                 | 36615        | 77.0  | RUDDICK    | 11449 blalock park   |                |
| JAY4       | M               | 3.0              | 1-002-194-1991 | OR                   |   166567 | 624736           | f        | sarena      | 815.0          | Oshkosh                  | Toledo         | M               | t6a 1i3      | 21.0  | JAYAMANNE  | 18354 dodd court     | Apt. 619       |
| tod5       | M               | 4.0              | 1-441-371-7651 | VA                   |    43631 |      3.06462e+06 | M        | Paulette    | 333.0          |                          | Corpus Christi | Z               | A2b 1v3      | 77.0  | todo       | 14117 roxboro street |                |
| Kan6       |                 | 0.0              | 1-957-940-5980 | OH                   |   466230 |      3.48913e+06 | m        | AMALITA     | 528.0          | VeraSun Energy           | Salt Lake City | R               | 49513        | 23.0  | Kanno      | 24697 FLORENCE WEST  |                |
| Din7       | M               | 2.0              | 1-768-633-4096 | Prince Edward Island |   420243 |      3.43074e+06 |          | Ernesto     | 680.0          | IDT                      | Brownsville    | Z               | M5d 1v6      | 9.0   | Dinkel     | 6488 applewood drive |                |
| Thi8       | U               |                  | 1-107-689-2155 | NV                   |   141862 |      1.74361e+06 |          | Toby        | 761.0          | Adams Resources & Energy | Escondido      |                 | V6c 1q1      | 63.0  | Thibodeaux | 17404 gale court     |                |
| May9       | M               | 2.0              | 1-173-594-6096 | Ontario              |   402011 | 216299           |          | evangelia   | 416.0          | MGIC Investment          | Los Angeles    |                 | 99716        | 32.0  | Mayo       | 15913 alexis street  |                |

TableB:
| prospect_AgeID   | prospect_MaSta   | prospect_NumChil   | prospect_Ph    | prospect_Sta   |   prospect_In |    prospect_NeWo | prospect_Ge   | prospect_FiNa               |   prospect_CreRa | prospect_Emp                   | prospect_Ci   | prospect_MiInit   | prospect_PosCo   |   prospect_Ag | prospect_Co              |   prospect_NumC | prospect_OOReF   | prospect_NumCrCa   |
|:-----------------|:-----------------|:-------------------|:---------------|:---------------|--------------:|-----------------:|:--------------|:----------------------------|-----------------:|:-------------------------------|:--------------|:------------------|:-----------------|--------------:|:-------------------------|----------------:|:-----------------|:-------------------|
| Iok7501          | U                |                    | 1-637-119-9996 | MO             |         94490 | 321776           |               | wbwsqgtaa                   |              580 | FM Global                      | Baltimore     | n                 | Guudshirvcu      |             7 | United States of America |               3 | U                |                    |
| tia7502          | S                | 4.0                | 1-560-405-0048 | TX             |          7037 |      2.29232e+06 | M             | QGJWCPAPZMWHYHZTNOYSSOQBI   |              683 | MGIC Investment                | Kitchener     |                   | wyggjewbe        |            48 | Canada                   |               4 | R                | 2.0                |
| AOI7503          | M                | 5.0                | 1-261-306-5079 | CT             |        419269 | 969707           |               | BHGXDDPUMBESLQMNEPREPTZNNKM |              411 | Ross Stores                    | Saint John    | u                 | YMZRQICUTHT      |            14 |                          |               1 | O                | 2.0                |
| PJQ7504          | W                | 5.0                | 1-642-299-6655 | UT             |         76681 |      3.89946e+06 | m             | Xgnvppcxgfnmawlupgfa        |              818 |                                | Berkeley      |                   | Bcjuycmcen       |            29 | United States of America |               4 | U                | 9.0                |
| SDV7505          | U                | 4.0                |                | RI             |        209116 |      3.74922e+06 |               | Tfiozpstcftslqtwkgngiiwo    |              370 | Alliance One International     | Missoula      |                   | Nujxguyehf       |            69 | United States of America |               2 | R                | 7.0                |
| Hga7506          | U                | 0.0                | 1-388-257-4273 | DE             |        212203 |      3.65853e+06 | F             | fbcahlrhhjoslfzqvvwwvhk     |              833 | Sally Beauty Holdings          | Salinas       | F                 | Neigswk          |            47 |                          |               0 | O                | 6.0                |
| Beo7507          | M                | 5.0                |                | NM             |         42018 |      1.73846e+06 | M             | Dcgkohfcwyoaxckalqnkrzwq    |              536 | Wisconsin Energy               | San Jose      | D                 | WNCEOQPLW        |             0 | Canada                   |               5 | U                | 2.0                |
| Qum7508          | S                | 0.0                | 1-632-118-1891 | WV             |         90446 |      3.3073e+06  |               | Vmnmcsinflxxmmifydckncc     |              775 | Carpenter Technology           | Cleveland     |                   | Cskdwtkf         |            46 | United States of America |               0 | R                | 0.0                |
| Hud7509          | M                | 1.0                | 1-853-806-4986 | NH             |         16274 |      1.81642e+06 |               | Vrkbkkxkddtximspigmlbwzt    |              765 | Liberty Mutual Insurance Group | Huntington    | v                 | tcxswloetdt      |             6 | United States of America |               1 | R                | 3.0                |
| jba7510          | M                | 2.0                | 1-220-687-2027 | WY             |         22215 |      2.59925e+06 | m             | RMWCTFTLSVTMCBI             |              555 | Black & Decker                 | Paterson      |                   | Fkpemasoukih     |            22 | Canada                   |               5 | O                | 6.0                |



source_headers: AgencyID
MaritalStatus
NumberChildren
Phone
State
Income
NetWorth
Gender
FirstName
CreditRating
Employer
City
MiddleInitial
PostalCode
Age
target_headers: prospect_AgeID
prospect_MaSta
prospect_NumChil
prospect_Ph
prospect_Sta
prospect_In
prospect_NeWo
prospect_Ge
prospect_FiNa
prospect_CreRa
prospect_Emp
prospect_Ci
prospect_MiInit
prospect_PosCo
prospect_Ag
column_mappings: AgencyID
prospect_AgeID
MaritalStatus
prospect_MaSta
NumberChildren
prospect_NumChil
Phone
prospect_Ph
State
prospect_Sta
Income
prospect_In
NetWorth
prospect_NeWo
Gender
prospect_Ge
FirstName
prospect_FiNa
CreditRating
prospect_CreRa
Employer
prospect_Emp
City
prospect_Ci
MiddleInitial
prospect_MiInit
PostalCode
prospect_PosCo
Age
prospect_Ag
output: {"column_mappings": [["AgencyID", "prospect_AgeID"], ["MaritalStatus", "prospect_MaSta"], ["NumberChildren", "prospect_NumChil"], ["Phone", "prospect_Ph"], ["State", "prospect_Sta"], ["Income", "prospect_In"], ["NetWorth", "prospect_NeWo"], ["Gender", "prospect_Ge"], ["FirstName", "prospect_FiNa"], ["CreditRating", "prospect_CreRa"], ["Employer", "prospect_Emp"], ["City", "prospect_Ci"], ["MiddleInitial", "prospect_MiInit"], ["PostalCode", "prospect_PosCo"], ["Age", "prospect_Ag"], ["LastName", null], ["AddressLine1", null], ["AddressLine2", null]]}