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   |         NetWorth | LastName   | AddressLine1         | NumberCars   | OwnOrRentFlag   | FirstName   | MiddleInitial   | Gender   | AddressLine2   | PostalCode   | City           | State                | Country                  |
|:-----------|-----------------:|:-----------|:---------------------|:-------------|:----------------|:------------|:----------------|:---------|:---------------|:-------------|:---------------|:---------------------|:-------------------------|
| PEL0       |      1.05887e+06 | PELLAND    | 21847 olympia street |              | O               | Netti       |                 | f        |                | T6b 1i1      | Fairbanks      | MA                   | United States of America |
| LED1       |      1.98818e+06 | LEDUC      | 245 congress court   | 5.0          | U               | TRUDY       |                 | F        | APT. 624       | 77281        | Quebec         | PA                   | United States of America |
| lat2       |      3.67313e+06 | latif      | 6517 frailing west   | 2.0          | O               | ireland     |                 |          |                | 91355        | Henderson      | Alberta              | United States of America |
| RUD3       |      2.0059e+06  | RUDDICK    | 11449 blalock park   | 2.0          | O               | Misti       |                 |          |                | 36615        | Salem          | AR                   | Canada                   |
| JAY4       | 624736           | JAYAMANNE  | 18354 dodd court     | 0.0          | O               | sarena      | M               | f        | Apt. 619       | t6a 1i3      | Toledo         | OR                   | Canada                   |
| tod5       |      3.06462e+06 | todo       | 14117 roxboro street | 1.0          | R               | Paulette    | Z               | M        |                | A2b 1v3      | Corpus Christi | VA                   | United States of America |
| Kan6       |      3.48913e+06 | Kanno      | 24697 FLORENCE WEST  | 4.0          | O               | AMALITA     | R               | m        |                | 49513        | Salt Lake City | OH                   | Canada                   |
| Din7       |      3.43074e+06 | Dinkel     | 6488 applewood drive | 2.0          | U               | Ernesto     | Z               |          |                | M5d 1v6      | Brownsville    | Prince Edward Island | United States of America |
| Thi8       |      1.74361e+06 | Thibodeaux | 17404 gale court     | 3.0          | O               | Toby        |                 |          |                | V6c 1q1      | Escondido      | NV                   | United States of America |
| May9       | 216299           | Mayo       | 15913 alexis street  | 0.0          | O               | evangelia   |                 |          |                | 99716        | Los Angeles    | Ontario              | United States of America |

TableB:
| prospect_gncd   |   prospect_ntwrth | prospect_lstnm                | prospect_ddrssln1                                                           |   prospect_nmbrcrs | prospect_wnrrntflg   | prospect_phn   |   prospect_ncm | prospect_nmbrchldrn   | prospect_mrtlstts   |   prospect_g |   prospect_crdtrtng | prospect_mplr                  | prospect_nmbrcrdtcrds   |
|:----------------|------------------:|:------------------------------|:----------------------------------------------------------------------------|-------------------:|:---------------------|:---------------|---------------:|:----------------------|:--------------------|-------------:|--------------------:|:-------------------------------|:------------------------|
| Iok7501         |  321776           | Iokwiqojocjanndatkdzgymym     | jsurlejkapodmkaccruslfkcqmbcquahsyweopxdxknl                                |                  3 | U                    | 1-637-119-9996 |          94490 |                       | U                   |            7 |                 580 | FM Global                      |                         |
| tia7502         |       2.29232e+06 | tiabxgseasiibxakctfzhfwotp    | Ggptcoorkpeeigqzevhwhjdxdfbrmidyxsugikhgmuvvpcptuphjlgmipvhrrsgepibdupa     |                  4 | R                    | 1-560-405-0048 |           7037 | 4.0                   | S                   |           48 |                 683 | MGIC Investment                | 2.0                     |
| AOI7503         |  969707           | AOIWIWTIHIXOJ                 | Gpcvjzlwouagawronludakqiuhbrbpbkkltrnlkoezgwcawpayfsnejpkmisnryphbtztbfemoy |                  1 | O                    | 1-261-306-5079 |         419269 | 5.0                   | M                   |           14 |                 411 | Ross Stores                    | 2.0                     |
| PJQ7504         |       3.89946e+06 | PJQSPMBUHYQKBOZ               | Yxkhkvrobywpdczvwmjgxvnuduavcpyiuceglhaskahgyxqpqjbdroyojouqkzfwvfpsddisy   |                  4 | U                    | 1-642-299-6655 |          76681 | 5.0                   | W                   |           29 |                 818 |                                | 9.0                     |
| SDV7505         |       3.74922e+06 | SDVLJWXENNGWCQMIW             | Ddsarhvraiskwmrddncqwvzkmjmxtgnpbtgyop                                      |                  2 | R                    |                |         209116 | 4.0                   | U                   |           69 |                 370 | Alliance One International     | 7.0                     |
| Hga7506         |       3.65853e+06 | Hgakmykzeunwkiaxayulpwyxrcuev | Ajpkrmtlcbdzr                                                               |                  0 | O                    | 1-388-257-4273 |         212203 | 0.0                   | U                   |           47 |                 833 | Sally Beauty Holdings          | 6.0                     |
| Beo7507         |       1.73846e+06 | Beotomyndkiqryllkvpavllytov   | PKSTPUXQIRGWSXSKWRAJTTNBAOLQKAAJFAPGWIHBWVCHOXLE                            |                  5 | U                    |                |          42018 | 5.0                   | M                   |            0 |                 536 | Wisconsin Energy               | 2.0                     |
| Qum7508         |       3.3073e+06  | Qumxrssnd                     | gyhrpdbplficrfirmtavitgpfmhnnhvsuoqwxrulxlqrdqkzshqovucentrxlakgkpwbrgtd    |                  0 | R                    | 1-632-118-1891 |          90446 | 0.0                   | S                   |           46 |                 775 | Carpenter Technology           | 0.0                     |
| Hud7509         |       1.81642e+06 | Hudlpfwjagzbnznyhamjkhbf      | GJTWIDOQOAPDVVULJGOOJBWTTANDJXOCQHWWZAGLGMJQXJOMWFTFVGXIH                   |                  1 | R                    | 1-853-806-4986 |          16274 | 1.0                   | M                   |            6 |                 765 | Liberty Mutual Insurance Group | 3.0                     |
| jba7510         |       2.59925e+06 | jbabemsfwdyeihxq              | Ycltsquohmuugxihqyluhkoy                                                    |                  5 | O                    | 1-220-687-2027 |          22215 | 2.0                   | M                   |           22 |                 555 | Black & Decker                 | 6.0                     |



source_headers: AgencyID
NetWorth
LastName
AddressLine1
NumberCars
OwnOrRentFlag
target_headers: prospect_gncd
prospect_ntwrth
prospect_lstnm
prospect_ddrssln1
prospect_nmbrcrs
prospect_wnrrntflg
column_mappings: AgencyID
prospect_gncd
NetWorth
prospect_ntwrth
LastName
prospect_lstnm
AddressLine1
prospect_ddrssln1
NumberCars
prospect_nmbrcrs
OwnOrRentFlag
prospect_wnrrntflg
output: {"column_mappings": [["AgencyID", "prospect_gncd"], ["NetWorth", "prospect_ntwrth"], ["LastName", "prospect_lstnm"], ["AddressLine1", "prospect_ddrssln1"], ["NumberCars", "prospect_nmbrcrs"], ["OwnOrRentFlag", "prospect_wnrrntflg"], ["FirstName", null], ["MiddleInitial", null], ["Gender", null], ["AddressLine2", null], ["PostalCode", null], ["City", null], ["State", null], ["Country", null]]}