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   | Phone          |         NetWorth | AddressLine1         | NumberCreditCards   | MaritalStatus   | NumberChildren   | City           | FirstName   | PostalCode   | Gender   |   Income | State                | Age   | Country                  | LastName   | MiddleInitial   | AddressLine2   |
|:-----------|:---------------|-----------------:|:---------------------|:--------------------|:----------------|:-----------------|:---------------|:------------|:-------------|:---------|---------:|:---------------------|:------|:-------------------------|:-----------|:----------------|:---------------|
| PEL0       | 1-712-522-6088 |      1.05887e+06 | 21847 olympia street |                     | W               | 3.0              | Fairbanks      | Netti       | T6b 1i1      | f        |   368776 | MA                   | 20.0  | United States of America | PELLAND    |                 |                |
| LED1       | 1-626-426-4298 |      1.98818e+06 | 245 congress court   | 6.0                 | U               | 1.0              | Quebec         | TRUDY       | 77281        | F        |   177967 | PA                   | 3.0   | United States of America | LEDUC      |                 | APT. 624       |
| lat2       | 1-524-787-8784 |      3.67313e+06 | 6517 frailing west   | 6.0                 | S               | 1.0              | Henderson      | ireland     | 91355        |          |   321772 | Alberta              |       | United States of America | latif      |                 |                |
| RUD3       | 1-741-997-1688 |      2.0059e+06  | 11449 blalock park   | 3.0                 | W               | 1.0              | Salem          | Misti       | 36615        |          |    25449 | AR                   | 77.0  | Canada                   | RUDDICK    |                 |                |
| JAY4       | 1-002-194-1991 | 624736           | 18354 dodd court     | 4.0                 | M               | 3.0              | Toledo         | sarena      | t6a 1i3      | f        |   166567 | OR                   | 21.0  | Canada                   | JAYAMANNE  | M               | Apt. 619       |
| tod5       | 1-441-371-7651 |      3.06462e+06 | 14117 roxboro street | 10.0                | M               | 4.0              | Corpus Christi | Paulette    | A2b 1v3      | M        |    43631 | VA                   | 77.0  | United States of America | todo       | Z               |                |
| Kan6       | 1-957-940-5980 |      3.48913e+06 | 24697 FLORENCE WEST  | 1.0                 |                 | 0.0              | Salt Lake City | AMALITA     | 49513        | m        |   466230 | OH                   | 23.0  | Canada                   | Kanno      | R               |                |
| Din7       | 1-768-633-4096 |      3.43074e+06 | 6488 applewood drive | 7.0                 | M               | 2.0              | Brownsville    | Ernesto     | M5d 1v6      |          |   420243 | Prince Edward Island | 9.0   | United States of America | Dinkel     | Z               |                |
| Thi8       | 1-107-689-2155 |      1.74361e+06 | 17404 gale court     | 10.0                | U               |                  | Escondido      | Toby        | V6c 1q1      |          |   141862 | NV                   | 63.0  | United States of America | Thibodeaux |                 |                |
| May9       | 1-173-594-6096 | 216299           | 15913 alexis street  |                     | M               | 2.0              | Los Angeles    | evangelia   | 99716        |          |   402011 | Ontario              | 32.0  | United States of America | Mayo       |                 |                |

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



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