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   | LastName   | AddressLine1       | MiddleInitial   | OwnOrRentFlag   | NumberCreditCards   | FirstName   | Gender   | AddressLine2   | PostalCode   | City           | State                | Country                  | Phone          |
|:-----------|:-----------|:-------------------|:----------------|:----------------|:--------------------|:------------|:---------|:---------------|:-------------|:---------------|:---------------------|:-------------------------|:---------------|
| PEL0       | PfLLAND    | 218r6olympisstreet |                 | O               |                     | Netti       | f        |                | T6b 1i1      | Fairbanks      | MA                   | United States of America | 1-712-522-6088 |
| LED1       | LEwUC      | 245congd2sscourh   |                 | U               | 6.0                 | TRUDY       | F        | APT. 624       | 77281        | Quebec         | PA                   | United States of America | 1-626-426-4298 |
| lat2       | latir      | 6517rrailihbwest   |                 | O               | 4.0                 | ireland     |          |                | 91355        | Henderson      | Alberta              | United States of America | 1-524-787-8784 |
| RUD3       | RiDDICK    | 114r9blalofopark   |                 | O               | 6.0                 | Misti       |          |                | 36615        | Salem          | AR                   | Canada                   | 1-741-997-1688 |
| JAY4       | JAuAMANNE  | 18364dodwcourt     | M               | O               | 7.0                 | sarena      | f        | Apt. 619       | t6a 1i3      | Toledo         | OR                   | Canada                   | 1-002-194-1991 |
| tod5       | todo       | 1411uroxbprostre3t | Z               | R               | 10.0                | Paulette    | M        |                | A2b 1v3      | Corpus Christi | VA                   | United States of America | 1-441-371-7651 |
| Kan6       | Kahno      | 24y07FLORENCEWfST  | R               | O               | 6.0                 | AMALITA     | m        |                | 49513        | Salt Lake City | OH                   | Canada                   | 1-957-940-5980 |
| Din7       | Dinjel     | 6488z0plew9oddrive | Z               | U               | 2.0                 | Ernesto     |          |                | M5d 1v6      | Brownsville    | Prince Edward Island | United States of America | 1-768-633-4096 |
| Thi8       | Thubodeayx | 17505galecourt     |                 | O               | 4.0                 | Toby        |          |                | V6c 1q1      | Escondido      | NV                   | United States of America | 1-107-689-2155 |
| May9       | Mayo       | w59q3alexisstre3t  |                 | O               |                     | evangelia   |          |                | 99716        | Los Angeles    | Ontario              | United States of America | 1-173-594-6096 |

TableB:
| prospect_AgID   | prospect_LaNa                 | prospect_AddrLi1                                                            | prospect_MiIni   | prospect_OOReF   | prospect_NuCreCa   |   prospect_Inc |   prospect_NuCa | prospect_NumCh   | prospect_MariSta   |   prospect_A |   prospect_CreRa | prospect_Emp                   |     prospect_NWo |
|:----------------|:------------------------------|:----------------------------------------------------------------------------|:-----------------|:-----------------|:-------------------|---------------:|----------------:|:-----------------|:-------------------|-------------:|-----------------:|:-------------------------------|-----------------:|
| Iok7501         | Iokwiqojocjanndatkdzgymym     | jsurlejkapodmkaccruslfkcqmbcquahsyweopxdxknl                                | n                | U                |                    |          94490 |               3 |                  | U                  |            7 |              580 | FM Global                      | 321776           |
| tia7502         | tiabxgseasiibxakctfzhfwotp    | Ggptcoorkpeeigqzevhwhjdxdfbrmidyxsugikhgmuvvpcptuphjlgmipvhrrsgepibdupa     |                  | R                | 2.0                |           7037 |               4 | 4.0              | S                  |           48 |              683 | MGIC Investment                |      2.29232e+06 |
| AOI7503         | AOIWIWTIHIXOJ                 | Gpcvjzlwouagawronludakqiuhbrbpbkkltrnlkoezgwcawpayfsnejpkmisnryphbtztbfemoy | u                | O                | 2.0                |         419269 |               1 | 5.0              | M                  |           14 |              411 | Ross Stores                    | 969707           |
| PJQ7504         | PJQSPMBUHYQKBOZ               | Yxkhkvrobywpdczvwmjgxvnuduavcpyiuceglhaskahgyxqpqjbdroyojouqkzfwvfpsddisy   |                  | U                | 9.0                |          76681 |               4 | 5.0              | W                  |           29 |              818 |                                |      3.89946e+06 |
| SDV7505         | SDVLJWXENNGWCQMIW             | Ddsarhvraiskwmrddncqwvzkmjmxtgnpbtgyop                                      |                  | R                | 7.0                |         209116 |               2 | 4.0              | U                  |           69 |              370 | Alliance One International     |      3.74922e+06 |
| Hga7506         | Hgakmykzeunwkiaxayulpwyxrcuev | Ajpkrmtlcbdzr                                                               | F                | O                | 6.0                |         212203 |               0 | 0.0              | U                  |           47 |              833 | Sally Beauty Holdings          |      3.65853e+06 |
| Beo7507         | Beotomyndkiqryllkvpavllytov   | PKSTPUXQIRGWSXSKWRAJTTNBAOLQKAAJFAPGWIHBWVCHOXLE                            | D                | U                | 2.0                |          42018 |               5 | 5.0              | M                  |            0 |              536 | Wisconsin Energy               |      1.73846e+06 |
| Qum7508         | Qumxrssnd                     | gyhrpdbplficrfirmtavitgpfmhnnhvsuoqwxrulxlqrdqkzshqovucentrxlakgkpwbrgtd    |                  | R                | 0.0                |          90446 |               0 | 0.0              | S                  |           46 |              775 | Carpenter Technology           |      3.3073e+06  |
| Hud7509         | Hudlpfwjagzbnznyhamjkhbf      | GJTWIDOQOAPDVVULJGOOJBWTTANDJXOCQHWWZAGLGMJQXJOMWFTFVGXIH                   | v                | R                | 3.0                |          16274 |               1 | 1.0              | M                  |            6 |              765 | Liberty Mutual Insurance Group |      1.81642e+06 |
| jba7510         | jbabemsfwdyeihxq              | Ycltsquohmuugxihqyluhkoy                                                    |                  | O                | 6.0                |          22215 |               5 | 2.0              | M                  |           22 |              555 | Black & Decker                 |      2.59925e+06 |



source_headers: AgencyID
LastName
AddressLine1
MiddleInitial
OwnOrRentFlag
NumberCreditCards
target_headers: prospect_AgID
prospect_LaNa
prospect_AddrLi1
prospect_MiIni
prospect_OOReF
prospect_NuCreCa
column_mappings: AgencyID
prospect_AgID
LastName
prospect_LaNa
AddressLine1
prospect_AddrLi1
MiddleInitial
prospect_MiIni
OwnOrRentFlag
prospect_OOReF
NumberCreditCards
prospect_NuCreCa
output: {"column_mappings": [["AgencyID", "prospect_AgID"], ["LastName", "prospect_LaNa"], ["AddressLine1", "prospect_AddrLi1"], ["MiddleInitial", "prospect_MiIni"], ["OwnOrRentFlag", "prospect_OOReF"], ["NumberCreditCards", "prospect_NuCreCa"], ["FirstName", null], ["Gender", null], ["AddressLine2", null], ["PostalCode", null], ["City", null], ["State", null], ["Country", null], ["Phone", null]]}