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   | Country                  | NumberCars   | LastName   | NumberCreditCards   | AddressLine1         | FirstName   | Gender   | CreditRating   | OwnOrRentFlag   |   Income | MiddleInitial   | AddressLine2   | PostalCode   | City           | State                |
|:-----------|:-------------------------|:-------------|:-----------|:--------------------|:---------------------|:------------|:---------|:---------------|:----------------|---------:|:----------------|:---------------|:-------------|:---------------|:---------------------|
| PEL0       | United States of America |              | PELLAND    |                     | 21847 olympia street | Netti       | f        | 760.0          | O               |   368776 |                 |                | T6b 1i1      | Fairbanks      | MA                   |
| LED1       | United States of America | 5.0          | LEDUC      | 6.0                 | 245 congress court   | TRUDY       | F        | 555.0          | U               |   177967 |                 | APT. 624       | 77281        | Quebec         | PA                   |
| lat2       | United States of America | 2.0          | latif      | 6.0                 | 6517 frailing west   | ireland     |          | 566.0          | O               |   321772 |                 |                | 91355        | Henderson      | Alberta              |
| RUD3       | Canada                   | 2.0          | RUDDICK    | 3.0                 | 11449 blalock park   | Misti       |          |                | O               |    25449 |                 |                | 36615        | Salem          | AR                   |
| JAY4       | Canada                   | 0.0          | JAYAMANNE  | 4.0                 | 18354 dodd court     | sarena      | f        | 815.0          | O               |   166567 | M               | Apt. 619       | t6a 1i3      | Toledo         | OR                   |
| tod5       | United States of America | 1.0          | todo       | 10.0                | 14117 roxboro street | Paulette    | M        | 333.0          | R               |    43631 | Z               |                | A2b 1v3      | Corpus Christi | VA                   |
| Kan6       | Canada                   | 4.0          | Kanno      | 1.0                 | 24697 FLORENCE WEST  | AMALITA     | m        | 528.0          | O               |   466230 | R               |                | 49513        | Salt Lake City | OH                   |
| Din7       | United States of America | 2.0          | Dinkel     | 7.0                 | 6488 applewood drive | Ernesto     |          | 680.0          | U               |   420243 | Z               |                | M5d 1v6      | Brownsville    | Prince Edward Island |
| Thi8       | United States of America | 3.0          | Thibodeaux | 10.0                | 17404 gale court     | Toby        |          | 761.0          | O               |   141862 |                 |                | V6c 1q1      | Escondido      | NV                   |
| May9       | United States of America | 0.0          | Mayo       |                     | 15913 alexis street  | evangelia   |          | 416.0          | O               |   402011 |                 |                | 99716        | Los Angeles    | Ontario              |

TableB:
| AgeID   | Coun                     |   NumC | LN                            | NumCreCa   | AddLi1                                                                      | FirN                        | Ge   |   CreRa | OwORFl   |    Inc | Ph             | NumChil   | MarSt   |   A | Em                             |             NeWo |
|:--------|:-------------------------|-------:|:------------------------------|:-----------|:----------------------------------------------------------------------------|:----------------------------|:-----|--------:|:---------|-------:|:---------------|:----------|:--------|----:|:-------------------------------|-----------------:|
| Iok7501 | United States of America |      3 | Iokwiqojocjanndatkdzgymym     |            | jsurlejkapodmkaccruslfkcqmbcquahsyweopxdxknl                                | wbwsqgtaa                   |      |     580 | U        |  94490 | 1-637-119-9996 |           | U       |   7 | FM Global                      | 321776           |
| tia7502 | Canada                   |      4 | tiabxgseasiibxakctfzhfwotp    | 2.0        | Ggptcoorkpeeigqzevhwhjdxdfbrmidyxsugikhgmuvvpcptuphjlgmipvhrrsgepibdupa     | QGJWCPAPZMWHYHZTNOYSSOQBI   | M    |     683 | R        |   7037 | 1-560-405-0048 | 4.0       | S       |  48 | MGIC Investment                |      2.29232e+06 |
| AOI7503 |                          |      1 | AOIWIWTIHIXOJ                 | 2.0        | Gpcvjzlwouagawronludakqiuhbrbpbkkltrnlkoezgwcawpayfsnejpkmisnryphbtztbfemoy | BHGXDDPUMBESLQMNEPREPTZNNKM |      |     411 | O        | 419269 | 1-261-306-5079 | 5.0       | M       |  14 | Ross Stores                    | 969707           |
| PJQ7504 | United States of America |      4 | PJQSPMBUHYQKBOZ               | 9.0        | Yxkhkvrobywpdczvwmjgxvnuduavcpyiuceglhaskahgyxqpqjbdroyojouqkzfwvfpsddisy   | Xgnvppcxgfnmawlupgfa        | m    |     818 | U        |  76681 | 1-642-299-6655 | 5.0       | W       |  29 |                                |      3.89946e+06 |
| SDV7505 | United States of America |      2 | SDVLJWXENNGWCQMIW             | 7.0        | Ddsarhvraiskwmrddncqwvzkmjmxtgnpbtgyop                                      | Tfiozpstcftslqtwkgngiiwo    |      |     370 | R        | 209116 |                | 4.0       | U       |  69 | Alliance One International     |      3.74922e+06 |
| Hga7506 |                          |      0 | Hgakmykzeunwkiaxayulpwyxrcuev | 6.0        | Ajpkrmtlcbdzr                                                               | fbcahlrhhjoslfzqvvwwvhk     | F    |     833 | O        | 212203 | 1-388-257-4273 | 0.0       | U       |  47 | Sally Beauty Holdings          |      3.65853e+06 |
| Beo7507 | Canada                   |      5 | Beotomyndkiqryllkvpavllytov   | 2.0        | PKSTPUXQIRGWSXSKWRAJTTNBAOLQKAAJFAPGWIHBWVCHOXLE                            | Dcgkohfcwyoaxckalqnkrzwq    | M    |     536 | U        |  42018 |                | 5.0       | M       |   0 | Wisconsin Energy               |      1.73846e+06 |
| Qum7508 | United States of America |      0 | Qumxrssnd                     | 0.0        | gyhrpdbplficrfirmtavitgpfmhnnhvsuoqwxrulxlqrdqkzshqovucentrxlakgkpwbrgtd    | Vmnmcsinflxxmmifydckncc     |      |     775 | R        |  90446 | 1-632-118-1891 | 0.0       | S       |  46 | Carpenter Technology           |      3.3073e+06  |
| Hud7509 | United States of America |      1 | Hudlpfwjagzbnznyhamjkhbf      | 3.0        | GJTWIDOQOAPDVVULJGOOJBWTTANDJXOCQHWWZAGLGMJQXJOMWFTFVGXIH                   | Vrkbkkxkddtximspigmlbwzt    |      |     765 | R        |  16274 | 1-853-806-4986 | 1.0       | M       |   6 | Liberty Mutual Insurance Group |      1.81642e+06 |
| jba7510 | Canada                   |      5 | jbabemsfwdyeihxq              | 6.0        | Ycltsquohmuugxihqyluhkoy                                                    | RMWCTFTLSVTMCBI             | m    |     555 | O        |  22215 | 1-220-687-2027 | 2.0       | M       |  22 | Black & Decker                 |      2.59925e+06 |



source_headers: AgencyID
Country
NumberCars
LastName
NumberCreditCards
AddressLine1
FirstName
Gender
CreditRating
OwnOrRentFlag
Income
target_headers: AgeID
Coun
NumC
LN
NumCreCa
AddLi1
FirN
Ge
CreRa
OwORFl
Inc
column_mappings: AgencyID
AgeID
Country
Coun
NumberCars
NumC
LastName
LN
NumberCreditCards
NumCreCa
AddressLine1
AddLi1
FirstName
FirN
Gender
Ge
CreditRating
CreRa
OwnOrRentFlag
OwORFl
Income
Inc
output: {"column_mappings": [["AgencyID", "AgeID"], ["Country", "Coun"], ["NumberCars", "NumC"], ["LastName", "LN"], ["NumberCreditCards", "NumCreCa"], ["AddressLine1", "AddLi1"], ["FirstName", "FirN"], ["Gender", "Ge"], ["CreditRating", "CreRa"], ["OwnOrRentFlag", "OwORFl"], ["Income", "Inc"], ["MiddleInitial", null], ["AddressLine2", null], ["PostalCode", null], ["City", null], ["State", null]]}