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   | FirstName   |         NetWorth | Employer                 | NumberCreditCards   | LastName   | AddressLine2   | MaritalStatus   | Gender   | Phone          | NumberChildren   | Age   | City           | Country                  | NumberCars   | MiddleInitial   | AddressLine1         | PostalCode   |
|:-----------|:------------|-----------------:|:-------------------------|:--------------------|:-----------|:---------------|:----------------|:---------|:---------------|:-----------------|:------|:---------------|:-------------------------|:-------------|:----------------|:---------------------|:-------------|
| PEL0       | Netti       |      1.05887e+06 | Brink's                  |                     | PELLAND    |                | W               | f        | 1-712-522-6088 | 3.0              | 20.0  | Fairbanks      | United States of America |              |                 | 21847 olympia street | T6b 1i1      |
| LED1       | TRUDY       |      1.98818e+06 |                          | 6.0                 | LEDUC      | APT. 624       | U               | F        | 1-626-426-4298 | 1.0              | 3.0   | Quebec         | United States of America | 5.0          |                 | 245 congress court   | 77281        |
| lat2       | ireland     |      3.67313e+06 |                          | 6.0                 | latif      |                | S               |          | 1-524-787-8784 | 1.0              |       | Henderson      | United States of America | 2.0          |                 | 6517 frailing west   | 91355        |
| RUD3       | Misti       |      2.0059e+06  | Air Products & Chemicals | 3.0                 | RUDDICK    |                | W               |          | 1-741-997-1688 | 1.0              | 77.0  | Salem          | Canada                   | 2.0          |                 | 11449 blalock park   | 36615        |
| JAY4       | sarena      | 624736           | Oshkosh                  | 4.0                 | JAYAMANNE  | Apt. 619       | M               | f        | 1-002-194-1991 | 3.0              | 21.0  | Toledo         | Canada                   | 0.0          | M               | 18354 dodd court     | t6a 1i3      |
| tod5       | Paulette    |      3.06462e+06 |                          | 10.0                | todo       |                | M               | M        | 1-441-371-7651 | 4.0              | 77.0  | Corpus Christi | United States of America | 1.0          | Z               | 14117 roxboro street | A2b 1v3      |
| Kan6       | AMALITA     |      3.48913e+06 | VeraSun Energy           | 1.0                 | Kanno      |                |                 | m        | 1-957-940-5980 | 0.0              | 23.0  | Salt Lake City | Canada                   | 4.0          | R               | 24697 FLORENCE WEST  | 49513        |
| Din7       | Ernesto     |      3.43074e+06 | IDT                      | 7.0                 | Dinkel     |                | M               |          | 1-768-633-4096 | 2.0              | 9.0   | Brownsville    | United States of America | 2.0          | Z               | 6488 applewood drive | M5d 1v6      |
| Thi8       | Toby        |      1.74361e+06 | Adams Resources & Energy | 10.0                | Thibodeaux |                | U               |          | 1-107-689-2155 |                  | 63.0  | Escondido      | United States of America | 3.0          |                 | 17404 gale court     | V6c 1q1      |
| May9       | evangelia   | 216299           | MGIC Investment          |                     | Mayo       |                | M               |          | 1-173-594-6096 | 2.0              | 32.0  | Los Angeles    | United States of America | 0.0          |                 | 15913 alexis street  | 99716        |

TableB:
| prospect_gncd   | prospect_frstnm             |   prospect_ntwrth | prospect_mplr                  | prospect_nmbrcrdtcrds   | prospect_lstnm                | prospect_ddrssln2                                                 | prospect_mrtlstts   | prospect_gndr   | prospect_phn   | prospect_nmbrchldrn   |   prospect_g | prospect_ct   | prospect_cntr            |   prospect_nmbrcrs | prospect_stt   |   prospect_ncm |   prospect_crdtrtng | prospect_wnrrntflg   |
|:----------------|:----------------------------|------------------:|:-------------------------------|:------------------------|:------------------------------|:------------------------------------------------------------------|:--------------------|:----------------|:---------------|:----------------------|-------------:|:--------------|:-------------------------|-------------------:|:---------------|---------------:|--------------------:|:---------------------|
| Iok7501         | wbwsqgtaa                   |  321776           | FM Global                      |                         | Iokwiqojocjanndatkdzgymym     | GKOIKEZZMQTPQUQZLSAUUMVBDPAXTWNWSXTYJYQ                           | U                   |                 | 1-637-119-9996 |                       |            7 | Baltimore     | United States of America |                  3 | MO             |          94490 |                 580 | U                    |
| tia7502         | QGJWCPAPZMWHYHZTNOYSSOQBI   |       2.29232e+06 | MGIC Investment                | 2.0                     | tiabxgseasiibxakctfzhfwotp    | ocmgcvnexhqhgoyrwpkgaopthdvandlzaaleqccjpjkbirtcqvorobgskhtlgndvn | S                   | M               | 1-560-405-0048 | 4.0                   |           48 | Kitchener     | Canada                   |                  4 | TX             |           7037 |                 683 | R                    |
| AOI7503         | BHGXDDPUMBESLQMNEPREPTZNNKM |  969707           | Ross Stores                    | 2.0                     | AOIWIWTIHIXOJ                 | Cdrxeolwrrxmwmhgexvcstvzz                                         | M                   |                 | 1-261-306-5079 | 5.0                   |           14 | Saint John    |                          |                  1 | CT             |         419269 |                 411 | O                    |
| PJQ7504         | Xgnvppcxgfnmawlupgfa        |       3.89946e+06 |                                | 9.0                     | PJQSPMBUHYQKBOZ               | WKSBVOFGJHQGAEKUYRZHHPH                                           | W                   | m               | 1-642-299-6655 | 5.0                   |           29 | Berkeley      | United States of America |                  4 | UT             |          76681 |                 818 | U                    |
| SDV7505         | Tfiozpstcftslqtwkgngiiwo    |       3.74922e+06 | Alliance One International     | 7.0                     | SDVLJWXENNGWCQMIW             | skxijfqpzshmts                                                    | U                   |                 |                | 4.0                   |           69 | Missoula      | United States of America |                  2 | RI             |         209116 |                 370 | R                    |
| Hga7506         | fbcahlrhhjoslfzqvvwwvhk     |       3.65853e+06 | Sally Beauty Holdings          | 6.0                     | Hgakmykzeunwkiaxayulpwyxrcuev | ZETOHHRKIBHCQCKZODIXJJSXCFY                                       | U                   | F               | 1-388-257-4273 | 0.0                   |           47 | Salinas       |                          |                  0 | DE             |         212203 |                 833 | O                    |
| Beo7507         | Dcgkohfcwyoaxckalqnkrzwq    |       1.73846e+06 | Wisconsin Energy               | 2.0                     | Beotomyndkiqryllkvpavllytov   | LJXAXKUJXQBGWBHJJAAM                                              | M                   | M               |                | 5.0                   |            0 | San Jose      | Canada                   |                  5 | NM             |          42018 |                 536 | U                    |
| Qum7508         | Vmnmcsinflxxmmifydckncc     |       3.3073e+06  | Carpenter Technology           | 0.0                     | Qumxrssnd                     | Jmlgjkjbqhrudrkqrm                                                | S                   |                 | 1-632-118-1891 | 0.0                   |           46 | Cleveland     | United States of America |                  0 | WV             |          90446 |                 775 | R                    |
| Hud7509         | Vrkbkkxkddtximspigmlbwzt    |       1.81642e+06 | Liberty Mutual Insurance Group | 3.0                     | Hudlpfwjagzbnznyhamjkhbf      | Qqcilgblxyikgr                                                    | M                   |                 | 1-853-806-4986 | 1.0                   |            6 | Huntington    | United States of America |                  1 | NH             |          16274 |                 765 | R                    |
| jba7510         | RMWCTFTLSVTMCBI             |       2.59925e+06 | Black & Decker                 | 6.0                     | jbabemsfwdyeihxq              | Ahtohqjfzfarn                                                     | M                   | m               | 1-220-687-2027 | 2.0                   |           22 | Paterson      | Canada                   |                  5 | WY             |          22215 |                 555 | O                    |



source_headers: AgencyID
FirstName
NetWorth
Employer
NumberCreditCards
LastName
AddressLine2
MaritalStatus
Gender
Phone
NumberChildren
Age
City
Country
NumberCars
target_headers: prospect_gncd
prospect_frstnm
prospect_ntwrth
prospect_mplr
prospect_nmbrcrdtcrds
prospect_lstnm
prospect_ddrssln2
prospect_mrtlstts
prospect_gndr
prospect_phn
prospect_nmbrchldrn
prospect_g
prospect_ct
prospect_cntr
prospect_nmbrcrs
column_mappings: AgencyID
prospect_gncd
FirstName
prospect_frstnm
NetWorth
prospect_ntwrth
Employer
prospect_mplr
NumberCreditCards
prospect_nmbrcrdtcrds
LastName
prospect_lstnm
AddressLine2
prospect_ddrssln2
MaritalStatus
prospect_mrtlstts
Gender
prospect_gndr
Phone
prospect_phn
NumberChildren
prospect_nmbrchldrn
Age
prospect_g
City
prospect_ct
Country
prospect_cntr
NumberCars
prospect_nmbrcrs
output: {"column_mappings": [["AgencyID", "prospect_gncd"], ["FirstName", "prospect_frstnm"], ["NetWorth", "prospect_ntwrth"], ["Employer", "prospect_mplr"], ["NumberCreditCards", "prospect_nmbrcrdtcrds"], ["LastName", "prospect_lstnm"], ["AddressLine2", "prospect_ddrssln2"], ["MaritalStatus", "prospect_mrtlstts"], ["Gender", "prospect_gndr"], ["Phone", "prospect_phn"], ["NumberChildren", "prospect_nmbrchldrn"], ["Age", "prospect_g"], ["City", "prospect_ct"], ["Country", "prospect_cntr"], ["NumberCars", "prospect_nmbrcrs"], ["MiddleInitial", null], ["AddressLine1", null], ["PostalCode", null]]}