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   | Gender   | FirstName   | OwnOrRentFlag   | Phone          | Employer                 | MiddleInitial   | CreditRating   | PostalCode   | NumberCars   | AddressLine1         | Age   | AddressLine2   | Country                  | MaritalStatus   | LastName   | City           | State                |
|:-----------|:---------|:------------|:----------------|:---------------|:-------------------------|:----------------|:---------------|:-------------|:-------------|:---------------------|:------|:---------------|:-------------------------|:----------------|:-----------|:---------------|:---------------------|
| PEL0       | f        | Netti       | O               | 1-712-522-6088 | Brink's                  |                 | 760.0          | T6b 1i1      |              | 21847 olympia street | 20.0  |                | United States of America | W               | PELLAND    | Fairbanks      | MA                   |
| LED1       | F        | TRUDY       | U               | 1-626-426-4298 |                          |                 | 555.0          | 77281        | 5.0          | 245 congress court   | 3.0   | APT. 624       | United States of America | U               | LEDUC      | Quebec         | PA                   |
| lat2       |          | ireland     | O               | 1-524-787-8784 |                          |                 | 566.0          | 91355        | 2.0          | 6517 frailing west   |       |                | United States of America | S               | latif      | Henderson      | Alberta              |
| RUD3       |          | Misti       | O               | 1-741-997-1688 | Air Products & Chemicals |                 |                | 36615        | 2.0          | 11449 blalock park   | 77.0  |                | Canada                   | W               | RUDDICK    | Salem          | AR                   |
| JAY4       | f        | sarena      | O               | 1-002-194-1991 | Oshkosh                  | M               | 815.0          | t6a 1i3      | 0.0          | 18354 dodd court     | 21.0  | Apt. 619       | Canada                   | M               | JAYAMANNE  | Toledo         | OR                   |
| tod5       | M        | Paulette    | R               | 1-441-371-7651 |                          | Z               | 333.0          | A2b 1v3      | 1.0          | 14117 roxboro street | 77.0  |                | United States of America | M               | todo       | Corpus Christi | VA                   |
| Kan6       | m        | AMALITA     | O               | 1-957-940-5980 | VeraSun Energy           | R               | 528.0          | 49513        | 4.0          | 24697 FLORENCE WEST  | 23.0  |                | Canada                   |                 | Kanno      | Salt Lake City | OH                   |
| Din7       |          | Ernesto     | U               | 1-768-633-4096 | IDT                      | Z               | 680.0          | M5d 1v6      | 2.0          | 6488 applewood drive | 9.0   |                | United States of America | M               | Dinkel     | Brownsville    | Prince Edward Island |
| Thi8       |          | Toby        | O               | 1-107-689-2155 | Adams Resources & Energy |                 | 761.0          | V6c 1q1      | 3.0          | 17404 gale court     | 63.0  |                | United States of America | U               | Thibodeaux | Escondido      | NV                   |
| May9       |          | evangelia   | O               | 1-173-594-6096 | MGIC Investment          |                 | 416.0          | 99716        | 0.0          | 15913 alexis street  | 32.0  |                | United States of America | M               | Mayo       | Los Angeles    | Ontario              |

TableB:
| prospect_AgencyID   | prospect_Gender   | prospect_FirstName          | prospect_OwnOrRentFlag   | prospect_Phone   | prospect_Employer              | prospect_MiddleInitial   |   prospect_CreditRating | prospect_PostalCode   |   prospect_NumberCars | prospect_AddressLine1                                                       |   prospect_Age | prospect_AddressLine2                                             | prospect_Country         | prospect_MaritalStatus   |   prospect_Income | prospect_NumberChildren   | prospect_NumberCreditCards   |   prospect_NetWorth |
|:--------------------|:------------------|:----------------------------|:-------------------------|:-----------------|:-------------------------------|:-------------------------|------------------------:|:----------------------|----------------------:|:----------------------------------------------------------------------------|---------------:|:------------------------------------------------------------------|:-------------------------|:-------------------------|------------------:|:--------------------------|:-----------------------------|--------------------:|
| Iok7501             |                   | wbwsqgtaa                   | U                        | 1-637-119-9996   | FM Global                      | n                        |                     580 | Guudshirvcu           |                     3 | jsurlejkapodmkaccruslfkcqmbcquahsyweopxdxknl                                |              7 | GKOIKEZZMQTPQUQZLSAUUMVBDPAXTWNWSXTYJYQ                           | United States of America | U                        |             94490 |                           |                              |    321776           |
| tia7502             | M                 | QGJWCPAPZMWHYHZTNOYSSOQBI   | R                        | 1-560-405-0048   | MGIC Investment                |                          |                     683 | wyggjewbe             |                     4 | Ggptcoorkpeeigqzevhwhjdxdfbrmidyxsugikhgmuvvpcptuphjlgmipvhrrsgepibdupa     |             48 | ocmgcvnexhqhgoyrwpkgaopthdvandlzaaleqccjpjkbirtcqvorobgskhtlgndvn | Canada                   | S                        |              7037 | 4.0                       | 2.0                          |         2.29232e+06 |
| AOI7503             |                   | BHGXDDPUMBESLQMNEPREPTZNNKM | O                        | 1-261-306-5079   | Ross Stores                    | u                        |                     411 | YMZRQICUTHT           |                     1 | Gpcvjzlwouagawronludakqiuhbrbpbkkltrnlkoezgwcawpayfsnejpkmisnryphbtztbfemoy |             14 | Cdrxeolwrrxmwmhgexvcstvzz                                         |                          | M                        |            419269 | 5.0                       | 2.0                          |    969707           |
| PJQ7504             | m                 | Xgnvppcxgfnmawlupgfa        | U                        | 1-642-299-6655   |                                |                          |                     818 | Bcjuycmcen            |                     4 | Yxkhkvrobywpdczvwmjgxvnuduavcpyiuceglhaskahgyxqpqjbdroyojouqkzfwvfpsddisy   |             29 | WKSBVOFGJHQGAEKUYRZHHPH                                           | United States of America | W                        |             76681 | 5.0                       | 9.0                          |         3.89946e+06 |
| SDV7505             |                   | Tfiozpstcftslqtwkgngiiwo    | R                        |                  | Alliance One International     |                          |                     370 | Nujxguyehf            |                     2 | Ddsarhvraiskwmrddncqwvzkmjmxtgnpbtgyop                                      |             69 | skxijfqpzshmts                                                    | United States of America | U                        |            209116 | 4.0                       | 7.0                          |         3.74922e+06 |
| Hga7506             | F                 | fbcahlrhhjoslfzqvvwwvhk     | O                        | 1-388-257-4273   | Sally Beauty Holdings          | F                        |                     833 | Neigswk               |                     0 | Ajpkrmtlcbdzr                                                               |             47 | ZETOHHRKIBHCQCKZODIXJJSXCFY                                       |                          | U                        |            212203 | 0.0                       | 6.0                          |         3.65853e+06 |
| Beo7507             | M                 | Dcgkohfcwyoaxckalqnkrzwq    | U                        |                  | Wisconsin Energy               | D                        |                     536 | WNCEOQPLW             |                     5 | PKSTPUXQIRGWSXSKWRAJTTNBAOLQKAAJFAPGWIHBWVCHOXLE                            |              0 | LJXAXKUJXQBGWBHJJAAM                                              | Canada                   | M                        |             42018 | 5.0                       | 2.0                          |         1.73846e+06 |
| Qum7508             |                   | Vmnmcsinflxxmmifydckncc     | R                        | 1-632-118-1891   | Carpenter Technology           |                          |                     775 | Cskdwtkf              |                     0 | gyhrpdbplficrfirmtavitgpfmhnnhvsuoqwxrulxlqrdqkzshqovucentrxlakgkpwbrgtd    |             46 | Jmlgjkjbqhrudrkqrm                                                | United States of America | S                        |             90446 | 0.0                       | 0.0                          |         3.3073e+06  |
| Hud7509             |                   | Vrkbkkxkddtximspigmlbwzt    | R                        | 1-853-806-4986   | Liberty Mutual Insurance Group | v                        |                     765 | tcxswloetdt           |                     1 | GJTWIDOQOAPDVVULJGOOJBWTTANDJXOCQHWWZAGLGMJQXJOMWFTFVGXIH                   |              6 | Qqcilgblxyikgr                                                    | United States of America | M                        |             16274 | 1.0                       | 3.0                          |         1.81642e+06 |
| jba7510             | m                 | RMWCTFTLSVTMCBI             | O                        | 1-220-687-2027   | Black & Decker                 |                          |                     555 | Fkpemasoukih          |                     5 | Ycltsquohmuugxihqyluhkoy                                                    |             22 | Ahtohqjfzfarn                                                     | Canada                   | M                        |             22215 | 2.0                       | 6.0                          |         2.59925e+06 |



source_headers: AgencyID
Gender
FirstName
OwnOrRentFlag
Phone
Employer
MiddleInitial
CreditRating
PostalCode
NumberCars
AddressLine1
Age
AddressLine2
Country
MaritalStatus
target_headers: prospect_AgencyID
prospect_Gender
prospect_FirstName
prospect_OwnOrRentFlag
prospect_Phone
prospect_Employer
prospect_MiddleInitial
prospect_CreditRating
prospect_PostalCode
prospect_NumberCars
prospect_AddressLine1
prospect_Age
prospect_AddressLine2
prospect_Country
prospect_MaritalStatus
column_mappings: AgencyID
prospect_AgencyID
Gender
prospect_Gender
FirstName
prospect_FirstName
OwnOrRentFlag
prospect_OwnOrRentFlag
Phone
prospect_Phone
Employer
prospect_Employer
MiddleInitial
prospect_MiddleInitial
CreditRating
prospect_CreditRating
PostalCode
prospect_PostalCode
NumberCars
prospect_NumberCars
AddressLine1
prospect_AddressLine1
Age
prospect_Age
AddressLine2
prospect_AddressLine2
Country
prospect_Country
MaritalStatus
prospect_MaritalStatus
output: {"column_mappings": [["AgencyID", "prospect_AgencyID"], ["Gender", "prospect_Gender"], ["FirstName", "prospect_FirstName"], ["OwnOrRentFlag", "prospect_OwnOrRentFlag"], ["Phone", "prospect_Phone"], ["Employer", "prospect_Employer"], ["MiddleInitial", "prospect_MiddleInitial"], ["CreditRating", "prospect_CreditRating"], ["PostalCode", "prospect_PostalCode"], ["NumberCars", "prospect_NumberCars"], ["AddressLine1", "prospect_AddressLine1"], ["Age", "prospect_Age"], ["AddressLine2", "prospect_AddressLine2"], ["Country", "prospect_Country"], ["MaritalStatus", "prospect_MaritalStatus"], ["LastName", null], ["City", null], ["State", null]]}