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   | NumberCars   | OwnOrRentFlag   | Age   | MaritalStatus   | Country               | FirstName   | AddressLine2   | City          | Phone          | State              | MiddleInitial   | NumberCreditCards   | CreditRating   | PostalCode   | LastName   | Gender   | AddressLine1         |
|:-----------|:-------------|:----------------|:------|:----------------|:----------------------|:------------|:---------------|:--------------|:---------------|:-------------------|:----------------|:--------------------|:---------------|:-------------|:-----------|:---------|:---------------------|
| PEL0       |              | O               | 97.0  | W               | UmitedStxtesoeAmericx | Nett9       |                | Fajrbanks     | 1 712 522 6088 | MA                 |                 |                     | 824.0          | T6b2i1       | PELLAND    | f        | 21847 olympia street |
| LED1       | 1.0          | U               | 38.0  | U               | UnitedStatrsofzm3rixa | TRUcY       | wPT624         | Q7ebec        | 1 626 426 4298 | PA                 |                 | 2.0                 | 1052.0         | 77281        | LEDUC      | F        | 245 congress court   |
| lat2       | 1.0          | O               |       | S               | UnitedStatespbAmsdica | jreland     |                | Henrerson     | 1 524 787 8784 | Aiberta            |                 | 7.0                 | 695.0          | 91355        | latif      |          | 6517 frailing west   |
| RUD3       | 2.0          | O               | 87.0  | W               | Cagada                | M9sti       |                | Szlem         | 1 741 997 1688 | AR                 |                 | 2.0                 |                | 36615        | RUDDICK    |          | 11449 blalock park   |
| JAY4       | 2.0          | O               | 79.0  | M               | danada                | sxrena      | wpt619         | Tokedo        | 1 002 194 1991 | OR                 | M               | 5.0                 | 1370.0         | 46a1i3       | JAYAMANNE  | f        | 18354 dodd court     |
| tod5       | 2.0          | R               | 59.0  | M               | UhihedStateskvAmerica | 9aulette    |                | Co3pusChristl | 1 441 371 7651 | VA                 | Z               | 5.0                 | 807.0          | w2b1v3       | todo       | M        | 14117 roxboro street |
| Kan6       | 1.0          | O               | 89.0  |                 | xanada                | AMAL8TA     |                | SaotoakeCity  | 1 957 940 5980 | OH                 | R               | 2.0                 | 1424.0         | 49513        | Kanno      | m        | 24697 FLORENCE WEST  |
| Din7       | 3.0          | U               | 17.0  | M               | Un8tedStxtespfAm3rica | Etnesto     |                | Brpwnsvillw   | 1 768 633 4096 | 0rinceEwwarxIsland | Z               | 2.0                 | 946.0          | M5d2v6       | Dinkel     |          | 6488 applewood drive |
| Thi8       | 2.0          | O               | 102.0 | U               | UbitedStwtedocAmerica | Toby        |                | Esvondido     | 1 107 689 2155 | NV                 |                 | 0.0                 | 1044.0         | V6cqq1       | Thibodeaux |          | 17404 gale court     |
| May9       | 1.0          | O               | 5.0   | M               | UnitedStahesifzmeruca | evamgelia   |                | LozAngelws    | 1 173 594 6096 | 8ntario            |                 |                     | 1118.0         | 99716        | Mayo       |          | 15913 alexis street  |

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



source_headers: AgencyID
NumberCars
OwnOrRentFlag
Age
MaritalStatus
Country
FirstName
AddressLine2
City
Phone
State
MiddleInitial
NumberCreditCards
CreditRating
PostalCode
target_headers: prospect_gncd
prospect_nmbrcrs
prospect_wnrrntflg
prospect_g
prospect_mrtlstts
prospect_cntr
prospect_frstnm
prospect_ddrssln2
prospect_ct
prospect_phn
prospect_stt
prospect_mddlntl
prospect_nmbrcrdtcrds
prospect_crdtrtng
prospect_pstlcd
column_mappings: AgencyID
prospect_gncd
NumberCars
prospect_nmbrcrs
OwnOrRentFlag
prospect_wnrrntflg
Age
prospect_g
MaritalStatus
prospect_mrtlstts
Country
prospect_cntr
FirstName
prospect_frstnm
AddressLine2
prospect_ddrssln2
City
prospect_ct
Phone
prospect_phn
State
prospect_stt
MiddleInitial
prospect_mddlntl
NumberCreditCards
prospect_nmbrcrdtcrds
CreditRating
prospect_crdtrtng
PostalCode
prospect_pstlcd
output: {"column_mappings": [["AgencyID", "prospect_gncd"], ["NumberCars", "prospect_nmbrcrs"], ["OwnOrRentFlag", "prospect_wnrrntflg"], ["Age", "prospect_g"], ["MaritalStatus", "prospect_mrtlstts"], ["Country", "prospect_cntr"], ["FirstName", "prospect_frstnm"], ["AddressLine2", "prospect_ddrssln2"], ["City", "prospect_ct"], ["Phone", "prospect_phn"], ["State", "prospect_stt"], ["MiddleInitial", "prospect_mddlntl"], ["NumberCreditCards", "prospect_nmbrcrdtcrds"], ["CreditRating", "prospect_crdtrtng"], ["PostalCode", "prospect_pstlcd"], ["LastName", null], ["Gender", null], ["AddressLine1", null]]}