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         | City           |         NetWorth | Country                  | Employer                 | LastName   | FirstName   | MiddleInitial   | Gender   | AddressLine2   | PostalCode   | State                | Phone          |
|:-----------|:---------------------|:---------------|-----------------:|:-------------------------|:-------------------------|:-----------|:------------|:----------------|:---------|:---------------|:-------------|:---------------------|:---------------|
| PEL0       | 21847 olympia street | Fairbanks      |      1.05887e+06 | United States of America | Brink's                  | PELLAND    | Netti       |                 | f        |                | T6b 1i1      | MA                   | 1-712-522-6088 |
| LED1       | 245 congress court   | Quebec         |      1.98818e+06 | United States of America |                          | LEDUC      | TRUDY       |                 | F        | APT. 624       | 77281        | PA                   | 1-626-426-4298 |
| lat2       | 6517 frailing west   | Henderson      |      3.67313e+06 | United States of America |                          | latif      | ireland     |                 |          |                | 91355        | Alberta              | 1-524-787-8784 |
| RUD3       | 11449 blalock park   | Salem          |      2.0059e+06  | Canada                   | Air Products & Chemicals | RUDDICK    | Misti       |                 |          |                | 36615        | AR                   | 1-741-997-1688 |
| JAY4       | 18354 dodd court     | Toledo         | 624736           | Canada                   | Oshkosh                  | JAYAMANNE  | sarena      | M               | f        | Apt. 619       | t6a 1i3      | OR                   | 1-002-194-1991 |
| tod5       | 14117 roxboro street | Corpus Christi |      3.06462e+06 | United States of America |                          | todo       | Paulette    | Z               | M        |                | A2b 1v3      | VA                   | 1-441-371-7651 |
| Kan6       | 24697 FLORENCE WEST  | Salt Lake City |      3.48913e+06 | Canada                   | VeraSun Energy           | Kanno      | AMALITA     | R               | m        |                | 49513        | OH                   | 1-957-940-5980 |
| Din7       | 6488 applewood drive | Brownsville    |      3.43074e+06 | United States of America | IDT                      | Dinkel     | Ernesto     | Z               |          |                | M5d 1v6      | Prince Edward Island | 1-768-633-4096 |
| Thi8       | 17404 gale court     | Escondido      |      1.74361e+06 | United States of America | Adams Resources & Energy | Thibodeaux | Toby        |                 |          |                | V6c 1q1      | NV                   | 1-107-689-2155 |
| May9       | 15913 alexis street  | Los Angeles    | 216299           | United States of America | MGIC Investment          | Mayo       | evangelia   |                 |          |                | 99716        | Ontario              | 1-173-594-6096 |

TableB:
| prospect_AgeID   | prospect_AddrL1                                                             | prospect_Ci   |   prospect_NeWor | prospect_Coun            | prospect_Em                    |   prospect_Inc |   prospect_NumCa | prospect_NuChil   | prospect_MarSta   |   prospect_A |   prospect_CrRat | prospect_OORF   | prospect_NuCreCar   |
|:-----------------|:----------------------------------------------------------------------------|:--------------|-----------------:|:-------------------------|:-------------------------------|---------------:|-----------------:|:------------------|:------------------|-------------:|-----------------:|:----------------|:--------------------|
| Iok7501          | jsurlejkapodmkaccruslfkcqmbcquahsyweopxdxknl                                | Baltimore     | 321776           | United States of America | FM Global                      |          94490 |                3 |                   | U                 |            7 |              580 | U               |                     |
| tia7502          | Ggptcoorkpeeigqzevhwhjdxdfbrmidyxsugikhgmuvvpcptuphjlgmipvhrrsgepibdupa     | Kitchener     |      2.29232e+06 | Canada                   | MGIC Investment                |           7037 |                4 | 4.0               | S                 |           48 |              683 | R               | 2.0                 |
| AOI7503          | Gpcvjzlwouagawronludakqiuhbrbpbkkltrnlkoezgwcawpayfsnejpkmisnryphbtztbfemoy | Saint John    | 969707           |                          | Ross Stores                    |         419269 |                1 | 5.0               | M                 |           14 |              411 | O               | 2.0                 |
| PJQ7504          | Yxkhkvrobywpdczvwmjgxvnuduavcpyiuceglhaskahgyxqpqjbdroyojouqkzfwvfpsddisy   | Berkeley      |      3.89946e+06 | United States of America |                                |          76681 |                4 | 5.0               | W                 |           29 |              818 | U               | 9.0                 |
| SDV7505          | Ddsarhvraiskwmrddncqwvzkmjmxtgnpbtgyop                                      | Missoula      |      3.74922e+06 | United States of America | Alliance One International     |         209116 |                2 | 4.0               | U                 |           69 |              370 | R               | 7.0                 |
| Hga7506          | Ajpkrmtlcbdzr                                                               | Salinas       |      3.65853e+06 |                          | Sally Beauty Holdings          |         212203 |                0 | 0.0               | U                 |           47 |              833 | O               | 6.0                 |
| Beo7507          | PKSTPUXQIRGWSXSKWRAJTTNBAOLQKAAJFAPGWIHBWVCHOXLE                            | San Jose      |      1.73846e+06 | Canada                   | Wisconsin Energy               |          42018 |                5 | 5.0               | M                 |            0 |              536 | U               | 2.0                 |
| Qum7508          | gyhrpdbplficrfirmtavitgpfmhnnhvsuoqwxrulxlqrdqkzshqovucentrxlakgkpwbrgtd    | Cleveland     |      3.3073e+06  | United States of America | Carpenter Technology           |          90446 |                0 | 0.0               | S                 |           46 |              775 | R               | 0.0                 |
| Hud7509          | GJTWIDOQOAPDVVULJGOOJBWTTANDJXOCQHWWZAGLGMJQXJOMWFTFVGXIH                   | Huntington    |      1.81642e+06 | United States of America | Liberty Mutual Insurance Group |          16274 |                1 | 1.0               | M                 |            6 |              765 | R               | 3.0                 |
| jba7510          | Ycltsquohmuugxihqyluhkoy                                                    | Paterson      |      2.59925e+06 | Canada                   | Black & Decker                 |          22215 |                5 | 2.0               | M                 |           22 |              555 | O               | 6.0                 |



source_headers: AgencyID
AddressLine1
City
NetWorth
Country
Employer
target_headers: prospect_AgeID
prospect_AddrL1
prospect_Ci
prospect_NeWor
prospect_Coun
prospect_Em
column_mappings: AgencyID
prospect_AgeID
AddressLine1
prospect_AddrL1
City
prospect_Ci
NetWorth
prospect_NeWor
Country
prospect_Coun
Employer
prospect_Em
output: {"column_mappings": [["AgencyID", "prospect_AgeID"], ["AddressLine1", "prospect_AddrL1"], ["City", "prospect_Ci"], ["NetWorth", "prospect_NeWor"], ["Country", "prospect_Coun"], ["Employer", "prospect_Em"], ["LastName", null], ["FirstName", null], ["MiddleInitial", null], ["Gender", null], ["AddressLine2", null], ["PostalCode", null], ["State", null], ["Phone", null]]}