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

TableB:
| AgencyID   | AddressLine1                                                                | FirstName                   | MaritalStatus   |         NetWorth | OwnOrRentFlag   | State   | NumberChildren   | Country                  | PostalCode   | NumberCreditCards   | Phone          |   Income |   NumberCars |   Age |   CreditRating | Employer                       |
|:-----------|:----------------------------------------------------------------------------|:----------------------------|:----------------|-----------------:|:----------------|:--------|:-----------------|:-------------------------|:-------------|:--------------------|:---------------|---------:|-------------:|------:|---------------:|:-------------------------------|
| Iok7501    | jsurlejkapodmkaccruslfkcqmbcquahsyweopxdxknl                                | wbwsqgtaa                   | U               | 321776           | U               | MO      |                  | United States of America | Guudshirvcu  |                     | 1-637-119-9996 |    94490 |            3 |     7 |            580 | FM Global                      |
| tia7502    | Ggptcoorkpeeigqzevhwhjdxdfbrmidyxsugikhgmuvvpcptuphjlgmipvhrrsgepibdupa     | QGJWCPAPZMWHYHZTNOYSSOQBI   | S               |      2.29232e+06 | R               | TX      | 4.0              | Canada                   | wyggjewbe    | 2.0                 | 1-560-405-0048 |     7037 |            4 |    48 |            683 | MGIC Investment                |
| AOI7503    | Gpcvjzlwouagawronludakqiuhbrbpbkkltrnlkoezgwcawpayfsnejpkmisnryphbtztbfemoy | BHGXDDPUMBESLQMNEPREPTZNNKM | M               | 969707           | O               | CT      | 5.0              |                          | YMZRQICUTHT  | 2.0                 | 1-261-306-5079 |   419269 |            1 |    14 |            411 | Ross Stores                    |
| PJQ7504    | Yxkhkvrobywpdczvwmjgxvnuduavcpyiuceglhaskahgyxqpqjbdroyojouqkzfwvfpsddisy   | Xgnvppcxgfnmawlupgfa        | W               |      3.89946e+06 | U               | UT      | 5.0              | United States of America | Bcjuycmcen   | 9.0                 | 1-642-299-6655 |    76681 |            4 |    29 |            818 |                                |
| SDV7505    | Ddsarhvraiskwmrddncqwvzkmjmxtgnpbtgyop                                      | Tfiozpstcftslqtwkgngiiwo    | U               |      3.74922e+06 | R               | RI      | 4.0              | United States of America | Nujxguyehf   | 7.0                 |                |   209116 |            2 |    69 |            370 | Alliance One International     |
| Hga7506    | Ajpkrmtlcbdzr                                                               | fbcahlrhhjoslfzqvvwwvhk     | U               |      3.65853e+06 | O               | DE      | 0.0              |                          | Neigswk      | 6.0                 | 1-388-257-4273 |   212203 |            0 |    47 |            833 | Sally Beauty Holdings          |
| Beo7507    | PKSTPUXQIRGWSXSKWRAJTTNBAOLQKAAJFAPGWIHBWVCHOXLE                            | Dcgkohfcwyoaxckalqnkrzwq    | M               |      1.73846e+06 | U               | NM      | 5.0              | Canada                   | WNCEOQPLW    | 2.0                 |                |    42018 |            5 |     0 |            536 | Wisconsin Energy               |
| Qum7508    | gyhrpdbplficrfirmtavitgpfmhnnhvsuoqwxrulxlqrdqkzshqovucentrxlakgkpwbrgtd    | Vmnmcsinflxxmmifydckncc     | S               |      3.3073e+06  | R               | WV      | 0.0              | United States of America | Cskdwtkf     | 0.0                 | 1-632-118-1891 |    90446 |            0 |    46 |            775 | Carpenter Technology           |
| Hud7509    | GJTWIDOQOAPDVVULJGOOJBWTTANDJXOCQHWWZAGLGMJQXJOMWFTFVGXIH                   | Vrkbkkxkddtximspigmlbwzt    | M               |      1.81642e+06 | R               | NH      | 1.0              | United States of America | tcxswloetdt  | 3.0                 | 1-853-806-4986 |    16274 |            1 |     6 |            765 | Liberty Mutual Insurance Group |
| jba7510    | Ycltsquohmuugxihqyluhkoy                                                    | RMWCTFTLSVTMCBI             | M               |      2.59925e+06 | O               | WY      | 2.0              | Canada                   | Fkpemasoukih | 6.0                 | 1-220-687-2027 |    22215 |            5 |    22 |            555 | Black & Decker                 |



source_headers: AgencyID
AddressLine1
FirstName
MaritalStatus
NetWorth
OwnOrRentFlag
State
NumberChildren
Country
PostalCode
NumberCreditCards
target_headers: AgencyID
AddressLine1
FirstName
MaritalStatus
NetWorth
OwnOrRentFlag
State
NumberChildren
Country
PostalCode
NumberCreditCards
column_mappings: AgencyID
AgencyID
AddressLine1
AddressLine1
FirstName
FirstName
MaritalStatus
MaritalStatus
NetWorth
NetWorth
OwnOrRentFlag
OwnOrRentFlag
State
State
NumberChildren
NumberChildren
Country
Country
PostalCode
PostalCode
NumberCreditCards
NumberCreditCards
output: {"column_mappings": [["AgencyID", "AgencyID"], ["AddressLine1", "AddressLine1"], ["FirstName", "FirstName"], ["MaritalStatus", "MaritalStatus"], ["NetWorth", "NetWorth"], ["OwnOrRentFlag", "OwnOrRentFlag"], ["State", "State"], ["NumberChildren", "NumberChildren"], ["Country", "Country"], ["PostalCode", "PostalCode"], ["NumberCreditCards", "NumberCreditCards"], ["LastName", null], ["MiddleInitial", null], ["Gender", null], ["AddressLine2", null], ["City", null]]}