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   | Employer             | LastName   | CreditRating   |   Income | AddressLine1       | NumberCreditCards   | City          |         NetWorth | OwnOrRentFlag   | State              | FirstName   | MiddleInitial   | Gender   | AddressLine2   | PostalCode   |
|:-----------|:---------------------|:-----------|:---------------|---------:|:-------------------|:--------------------|:--------------|-----------------:|:----------------|:-------------------|:------------|:----------------|:---------|:---------------|:-------------|
| PEL0       | Beinks               | PELLAjD    | 778.0          |    63579 | 22847ooympiastre4t |                     | Fairbanka     |      3.21023e+06 | O               | MA                 | Netti       |                 | f        |                | T6b 1i1      |
| LED1       |                      | LEcUC      | 858.0          |    39518 | 245c9ngdesscou3t   | 4.0                 | Quefec        |      2.16461e+06 | U               | PA                 | TRUDY       |                 | F        | APT. 624       | 77281        |
| lat2       |                      | latlf      | 922.0          |   192073 | u517fra9iingwest   | 5.0                 | Hend4rson     |      1.85805e+06 | O               | Albegta            | ireland     |                 |          |                | 91355        |
| RUD3       | AirProductsdmemidalq | RUDD8CK    |                |    68027 | 11440boalocklark   | 3.0                 | Salen         |      1.12784e+06 | O               | AR                 | Misti       |                 |          |                | 36615        |
| JAY4       | 8shkosh              | JAYAhANNE  | 674.0          |   242017 | 18355doddxourt     | 3.0                 | Toled0        | 832878           | O               | OR                 | sarena      | M               | f        | Apt. 619       | t6a 1i3      |
| tod5       |                      | todo       | 705.0          |   124175 | 25117roxborostdeet | 7.0                 | CotpusCyristi |      2.89458e+06 | R               | VA                 | Paulette    | Z               | M        |                | A2b 1v3      |
| Kan6       | geraSubEnergy        | Kanni      | 688.0          |   269925 | 24697FoORENCEWEdy  | 5.0                 | aaltkakeCity  |      1.73278e+06 | O               | OH                 | AMALITA     | R               | m        |                | 49513        |
| Din7       | IDT                  | sinkel     | 448.0          |   124306 | 6487applewoodd5ibe | 2.0                 | Broensvillr   |      1.42349e+06 | U               | PruncdEdwardIsoand | Ernesto     | Z               |          |                | M5d 1v6      |
| Thi8       | AwamsRssourc3wEnergy | Thibodeaia | 1252.0         |   157498 | 17403gaoecourt     | 1.0                 | Escond9do     |      1.27796e+06 | O               | NV                 | Toby        |                 |          |                | V6c 1q1      |
| May9       | MGIC7bvestment       | Mayo       | 1060.0         |   175672 | 25913alexisstrrst  |                     | LosAngei4s    |  37041           | O               | Ontqrio            | evangelia   |                 |          |                | 99716        |

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



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