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   | Phone          | AddressLine2   | AddressLine1       | PostalCode   | FirstName   | MiddleInitial   | Gender   | City           | State                | Country                  |   Income | NumberCars   |
|:-----------|:-----------|:---------------|:---------------|:-------------------|:-------------|:------------|:----------------|:---------|:---------------|:---------------------|:-------------------------|---------:|:-------------|
| PEL0       | P2LLAND    | 1 712 522 6088 |                | 21847oogmp7astreet | Ttb1i1       | Netti       |                 | f        | Fairbanks      | MA                   | United States of America |   368776 |              |
| LED1       | pEDUC      | 1 626 426 4298 | APg624         | 245voggressco6rt   | 77281        | TRUDY       |                 | F        | Quebec         | PA                   | United States of America |   177967 | 5.0          |
| lat2       | iatif      | 1 524 787 8784 |                | t517frailinf2est   | 91355        | ireland     |                 |          | Henderson      | Alberta              | United States of America |   321772 | 2.0          |
| RUD3       | RUDsICK    | 1 741 997 1688 |                | 11449bkqlockpa3k   | 36615        | Misti       |                 |          | Salem          | AR                   | Canada                   |    25449 | 2.0          |
| JAY4       | JAYAMANN3  | 1 002 194 1991 | Apt61i         | 183r3doddcourt     | t6a1iw       | sarena      | M               | f        | Toledo         | OR                   | Canada                   |   166567 | 0.0          |
| tod5       | todo       | 1 441 371 7651 |                | 141w7rocborkstreet | w2b1v3       | Paulette    | Z               | M        | Corpus Christi | VA                   | United States of America |    43631 | 1.0          |
| Kan6       | Kabno      | 1 957 940 5980 |                | 24y97FLOfENCsWEST  | 49513        | AMALITA     | R               | m        | Salt Lake City | OH                   | Canada                   |   466230 | 4.0          |
| Din7       | D9nkel     | 1 768 633 4096 |                | t488applewoodd3iv2 | j5d1v6       | Ernesto     | Z               |          | Brownsville    | Prince Edward Island | United States of America |   420243 | 2.0          |
| Thi8       | Thiblseaux | 1 107 689 2155 |                | 17r03galecourt     | V6c2q1       | Toby        |                 |          | Escondido      | NV                   | United States of America |   141862 | 3.0          |
| May9       | Mayo       | 1 173 594 6096 |                | 15914aiexisstr4et  | 99716        | evangelia   |                 |          | Los Angeles    | Ontario              | United States of America |   402011 | 0.0          |

TableB:
| prospect_AgencyID   | prospect_LastName             | prospect_Phone   | prospect_AddressLine2                                             | prospect_AddressLine1                                                       | prospect_PostalCode   | prospect_NumberChildren   | prospect_MaritalStatus   |   prospect_Age |   prospect_CreditRating | prospect_OwnOrRentFlag   | prospect_Employer              | prospect_NumberCreditCards   |   prospect_NetWorth |
|:--------------------|:------------------------------|:-----------------|:------------------------------------------------------------------|:----------------------------------------------------------------------------|:----------------------|:--------------------------|:-------------------------|---------------:|------------------------:|:-------------------------|:-------------------------------|:-----------------------------|--------------------:|
| Iok7501             | Iokwiqojocjanndatkdzgymym     | 1-637-119-9996   | GKOIKEZZMQTPQUQZLSAUUMVBDPAXTWNWSXTYJYQ                           | jsurlejkapodmkaccruslfkcqmbcquahsyweopxdxknl                                | Guudshirvcu           |                           | U                        |              7 |                     580 | U                        | FM Global                      |                              |    321776           |
| tia7502             | tiabxgseasiibxakctfzhfwotp    | 1-560-405-0048   | ocmgcvnexhqhgoyrwpkgaopthdvandlzaaleqccjpjkbirtcqvorobgskhtlgndvn | Ggptcoorkpeeigqzevhwhjdxdfbrmidyxsugikhgmuvvpcptuphjlgmipvhrrsgepibdupa     | wyggjewbe             | 4.0                       | S                        |             48 |                     683 | R                        | MGIC Investment                | 2.0                          |         2.29232e+06 |
| AOI7503             | AOIWIWTIHIXOJ                 | 1-261-306-5079   | Cdrxeolwrrxmwmhgexvcstvzz                                         | Gpcvjzlwouagawronludakqiuhbrbpbkkltrnlkoezgwcawpayfsnejpkmisnryphbtztbfemoy | YMZRQICUTHT           | 5.0                       | M                        |             14 |                     411 | O                        | Ross Stores                    | 2.0                          |    969707           |
| PJQ7504             | PJQSPMBUHYQKBOZ               | 1-642-299-6655   | WKSBVOFGJHQGAEKUYRZHHPH                                           | Yxkhkvrobywpdczvwmjgxvnuduavcpyiuceglhaskahgyxqpqjbdroyojouqkzfwvfpsddisy   | Bcjuycmcen            | 5.0                       | W                        |             29 |                     818 | U                        |                                | 9.0                          |         3.89946e+06 |
| SDV7505             | SDVLJWXENNGWCQMIW             |                  | skxijfqpzshmts                                                    | Ddsarhvraiskwmrddncqwvzkmjmxtgnpbtgyop                                      | Nujxguyehf            | 4.0                       | U                        |             69 |                     370 | R                        | Alliance One International     | 7.0                          |         3.74922e+06 |
| Hga7506             | Hgakmykzeunwkiaxayulpwyxrcuev | 1-388-257-4273   | ZETOHHRKIBHCQCKZODIXJJSXCFY                                       | Ajpkrmtlcbdzr                                                               | Neigswk               | 0.0                       | U                        |             47 |                     833 | O                        | Sally Beauty Holdings          | 6.0                          |         3.65853e+06 |
| Beo7507             | Beotomyndkiqryllkvpavllytov   |                  | LJXAXKUJXQBGWBHJJAAM                                              | PKSTPUXQIRGWSXSKWRAJTTNBAOLQKAAJFAPGWIHBWVCHOXLE                            | WNCEOQPLW             | 5.0                       | M                        |              0 |                     536 | U                        | Wisconsin Energy               | 2.0                          |         1.73846e+06 |
| Qum7508             | Qumxrssnd                     | 1-632-118-1891   | Jmlgjkjbqhrudrkqrm                                                | gyhrpdbplficrfirmtavitgpfmhnnhvsuoqwxrulxlqrdqkzshqovucentrxlakgkpwbrgtd    | Cskdwtkf              | 0.0                       | S                        |             46 |                     775 | R                        | Carpenter Technology           | 0.0                          |         3.3073e+06  |
| Hud7509             | Hudlpfwjagzbnznyhamjkhbf      | 1-853-806-4986   | Qqcilgblxyikgr                                                    | GJTWIDOQOAPDVVULJGOOJBWTTANDJXOCQHWWZAGLGMJQXJOMWFTFVGXIH                   | tcxswloetdt           | 1.0                       | M                        |              6 |                     765 | R                        | Liberty Mutual Insurance Group | 3.0                          |         1.81642e+06 |
| jba7510             | jbabemsfwdyeihxq              | 1-220-687-2027   | Ahtohqjfzfarn                                                     | Ycltsquohmuugxihqyluhkoy                                                    | Fkpemasoukih          | 2.0                       | M                        |             22 |                     555 | O                        | Black & Decker                 | 6.0                          |         2.59925e+06 |



source_headers: AgencyID
LastName
Phone
AddressLine2
AddressLine1
PostalCode
target_headers: prospect_AgencyID
prospect_LastName
prospect_Phone
prospect_AddressLine2
prospect_AddressLine1
prospect_PostalCode
column_mappings: AgencyID
prospect_AgencyID
LastName
prospect_LastName
Phone
prospect_Phone
AddressLine2
prospect_AddressLine2
AddressLine1
prospect_AddressLine1
PostalCode
prospect_PostalCode
output: {"column_mappings": [["AgencyID", "prospect_AgencyID"], ["LastName", "prospect_LastName"], ["Phone", "prospect_Phone"], ["AddressLine2", "prospect_AddressLine2"], ["AddressLine1", "prospect_AddressLine1"], ["PostalCode", "prospect_PostalCode"], ["FirstName", null], ["MiddleInitial", null], ["Gender", null], ["City", null], ["State", null], ["Country", null], ["Income", null], ["NumberCars", null]]}