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   | NumberChildren   | NumberCars   | City           | CreditRating   |         NetWorth | Gender   | OwnOrRentFlag   | NumberCreditCards   | PostalCode   | FirstName   | LastName   | MiddleInitial   | AddressLine1         | AddressLine2   | State                |
|:-----------|:-----------------|:-------------|:---------------|:---------------|-----------------:|:---------|:----------------|:--------------------|:-------------|:------------|:-----------|:----------------|:---------------------|:---------------|:---------------------|
| PEL0       | 3.0              |              | Fairbanks      | 760.0          |      1.05887e+06 | f        | O               |                     | T6b 1i1      | Netti       | PELLAND    |                 | 21847 olympia street |                | MA                   |
| LED1       | 1.0              | 5.0          | Quebec         | 555.0          |      1.98818e+06 | F        | U               | 6.0                 | 77281        | TRUDY       | LEDUC      |                 | 245 congress court   | APT. 624       | PA                   |
| lat2       | 1.0              | 2.0          | Henderson      | 566.0          |      3.67313e+06 |          | O               | 6.0                 | 91355        | ireland     | latif      |                 | 6517 frailing west   |                | Alberta              |
| RUD3       | 1.0              | 2.0          | Salem          |                |      2.0059e+06  |          | O               | 3.0                 | 36615        | Misti       | RUDDICK    |                 | 11449 blalock park   |                | AR                   |
| JAY4       | 3.0              | 0.0          | Toledo         | 815.0          | 624736           | f        | O               | 4.0                 | t6a 1i3      | sarena      | JAYAMANNE  | M               | 18354 dodd court     | Apt. 619       | OR                   |
| tod5       | 4.0              | 1.0          | Corpus Christi | 333.0          |      3.06462e+06 | M        | R               | 10.0                | A2b 1v3      | Paulette    | todo       | Z               | 14117 roxboro street |                | VA                   |
| Kan6       | 0.0              | 4.0          | Salt Lake City | 528.0          |      3.48913e+06 | m        | O               | 1.0                 | 49513        | AMALITA     | Kanno      | R               | 24697 FLORENCE WEST  |                | OH                   |
| Din7       | 2.0              | 2.0          | Brownsville    | 680.0          |      3.43074e+06 |          | U               | 7.0                 | M5d 1v6      | Ernesto     | Dinkel     | Z               | 6488 applewood drive |                | Prince Edward Island |
| Thi8       |                  | 3.0          | Escondido      | 761.0          |      1.74361e+06 |          | O               | 10.0                | V6c 1q1      | Toby        | Thibodeaux |                 | 17404 gale court     |                | NV                   |
| May9       | 2.0              | 0.0          | Los Angeles    | 416.0          | 216299           |          | O               |                     | 99716        | evangelia   | Mayo       |                 | 15913 alexis street  |                | Ontario              |

TableB:
| prospect_gncd   | prospect_nmbrchldrn   |   prospect_nmbrcrs | prospect_ct   |   prospect_crdtrtng |   prospect_ntwrth | prospect_gndr   | prospect_wnrrntflg   | prospect_nmbrcrdtcrds   | prospect_pstlcd   | prospect_frstnm             | prospect_cntr            | prospect_phn   |   prospect_ncm | prospect_mrtlstts   |   prospect_g | prospect_mplr                  |
|:----------------|:----------------------|-------------------:|:--------------|--------------------:|------------------:|:----------------|:---------------------|:------------------------|:------------------|:----------------------------|:-------------------------|:---------------|---------------:|:--------------------|-------------:|:-------------------------------|
| Iok7501         |                       |                  3 | Baltimore     |                 580 |  321776           |                 | U                    |                         | Guudshirvcu       | wbwsqgtaa                   | United States of America | 1-637-119-9996 |          94490 | U                   |            7 | FM Global                      |
| tia7502         | 4.0                   |                  4 | Kitchener     |                 683 |       2.29232e+06 | M               | R                    | 2.0                     | wyggjewbe         | QGJWCPAPZMWHYHZTNOYSSOQBI   | Canada                   | 1-560-405-0048 |           7037 | S                   |           48 | MGIC Investment                |
| AOI7503         | 5.0                   |                  1 | Saint John    |                 411 |  969707           |                 | O                    | 2.0                     | YMZRQICUTHT       | BHGXDDPUMBESLQMNEPREPTZNNKM |                          | 1-261-306-5079 |         419269 | M                   |           14 | Ross Stores                    |
| PJQ7504         | 5.0                   |                  4 | Berkeley      |                 818 |       3.89946e+06 | m               | U                    | 9.0                     | Bcjuycmcen        | Xgnvppcxgfnmawlupgfa        | United States of America | 1-642-299-6655 |          76681 | W                   |           29 |                                |
| SDV7505         | 4.0                   |                  2 | Missoula      |                 370 |       3.74922e+06 |                 | R                    | 7.0                     | Nujxguyehf        | Tfiozpstcftslqtwkgngiiwo    | United States of America |                |         209116 | U                   |           69 | Alliance One International     |
| Hga7506         | 0.0                   |                  0 | Salinas       |                 833 |       3.65853e+06 | F               | O                    | 6.0                     | Neigswk           | fbcahlrhhjoslfzqvvwwvhk     |                          | 1-388-257-4273 |         212203 | U                   |           47 | Sally Beauty Holdings          |
| Beo7507         | 5.0                   |                  5 | San Jose      |                 536 |       1.73846e+06 | M               | U                    | 2.0                     | WNCEOQPLW         | Dcgkohfcwyoaxckalqnkrzwq    | Canada                   |                |          42018 | M                   |            0 | Wisconsin Energy               |
| Qum7508         | 0.0                   |                  0 | Cleveland     |                 775 |       3.3073e+06  |                 | R                    | 0.0                     | Cskdwtkf          | Vmnmcsinflxxmmifydckncc     | United States of America | 1-632-118-1891 |          90446 | S                   |           46 | Carpenter Technology           |
| Hud7509         | 1.0                   |                  1 | Huntington    |                 765 |       1.81642e+06 |                 | R                    | 3.0                     | tcxswloetdt       | Vrkbkkxkddtximspigmlbwzt    | United States of America | 1-853-806-4986 |          16274 | M                   |            6 | Liberty Mutual Insurance Group |
| jba7510         | 2.0                   |                  5 | Paterson      |                 555 |       2.59925e+06 | m               | O                    | 6.0                     | Fkpemasoukih      | RMWCTFTLSVTMCBI             | Canada                   | 1-220-687-2027 |          22215 | M                   |           22 | Black & Decker                 |



source_headers: AgencyID
NumberChildren
NumberCars
City
CreditRating
NetWorth
Gender
OwnOrRentFlag
NumberCreditCards
PostalCode
FirstName
target_headers: prospect_gncd
prospect_nmbrchldrn
prospect_nmbrcrs
prospect_ct
prospect_crdtrtng
prospect_ntwrth
prospect_gndr
prospect_wnrrntflg
prospect_nmbrcrdtcrds
prospect_pstlcd
prospect_frstnm
column_mappings: AgencyID
prospect_gncd
NumberChildren
prospect_nmbrchldrn
NumberCars
prospect_nmbrcrs
City
prospect_ct
CreditRating
prospect_crdtrtng
NetWorth
prospect_ntwrth
Gender
prospect_gndr
OwnOrRentFlag
prospect_wnrrntflg
NumberCreditCards
prospect_nmbrcrdtcrds
PostalCode
prospect_pstlcd
FirstName
prospect_frstnm
output: {"column_mappings": [["AgencyID", "prospect_gncd"], ["NumberChildren", "prospect_nmbrchldrn"], ["NumberCars", "prospect_nmbrcrs"], ["City", "prospect_ct"], ["CreditRating", "prospect_crdtrtng"], ["NetWorth", "prospect_ntwrth"], ["Gender", "prospect_gndr"], ["OwnOrRentFlag", "prospect_wnrrntflg"], ["NumberCreditCards", "prospect_nmbrcrdtcrds"], ["PostalCode", "prospect_pstlcd"], ["FirstName", "prospect_frstnm"], ["LastName", null], ["MiddleInitial", null], ["AddressLine1", null], ["AddressLine2", null], ["State", null]]}