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   | City           | MiddleInitial   | NumberCreditCards   | AddressLine2   | Age   | CreditRating   | LastName   | MaritalStatus   | Gender   | Phone          | OwnOrRentFlag   | Country                  | AddressLine1         | NumberChildren   | FirstName   | PostalCode   | State                |
|:-----------|:---------------|:----------------|:--------------------|:---------------|:------|:---------------|:-----------|:----------------|:---------|:---------------|:----------------|:-------------------------|:---------------------|:-----------------|:------------|:-------------|:---------------------|
| PEL0       | Fairbanks      |                 |                     |                | 20.0  | 760.0          | PELLAND    | W               | f        | 1-712-522-6088 | O               | United States of America | 21847 olympia street | 3.0              | Netti       | T6b 1i1      | MA                   |
| LED1       | Quebec         |                 | 6.0                 | APT. 624       | 3.0   | 555.0          | LEDUC      | U               | F        | 1-626-426-4298 | U               | United States of America | 245 congress court   | 1.0              | TRUDY       | 77281        | PA                   |
| lat2       | Henderson      |                 | 6.0                 |                |       | 566.0          | latif      | S               |          | 1-524-787-8784 | O               | United States of America | 6517 frailing west   | 1.0              | ireland     | 91355        | Alberta              |
| RUD3       | Salem          |                 | 3.0                 |                | 77.0  |                | RUDDICK    | W               |          | 1-741-997-1688 | O               | Canada                   | 11449 blalock park   | 1.0              | Misti       | 36615        | AR                   |
| JAY4       | Toledo         | M               | 4.0                 | Apt. 619       | 21.0  | 815.0          | JAYAMANNE  | M               | f        | 1-002-194-1991 | O               | Canada                   | 18354 dodd court     | 3.0              | sarena      | t6a 1i3      | OR                   |
| tod5       | Corpus Christi | Z               | 10.0                |                | 77.0  | 333.0          | todo       | M               | M        | 1-441-371-7651 | R               | United States of America | 14117 roxboro street | 4.0              | Paulette    | A2b 1v3      | VA                   |
| Kan6       | Salt Lake City | R               | 1.0                 |                | 23.0  | 528.0          | Kanno      |                 | m        | 1-957-940-5980 | O               | Canada                   | 24697 FLORENCE WEST  | 0.0              | AMALITA     | 49513        | OH                   |
| Din7       | Brownsville    | Z               | 7.0                 |                | 9.0   | 680.0          | Dinkel     | M               |          | 1-768-633-4096 | U               | United States of America | 6488 applewood drive | 2.0              | Ernesto     | M5d 1v6      | Prince Edward Island |
| Thi8       | Escondido      |                 | 10.0                |                | 63.0  | 761.0          | Thibodeaux | U               |          | 1-107-689-2155 | O               | United States of America | 17404 gale court     |                  | Toby        | V6c 1q1      | NV                   |
| May9       | Los Angeles    |                 |                     |                | 32.0  | 416.0          | Mayo       | M               |          | 1-173-594-6096 | O               | United States of America | 15913 alexis street  | 2.0              | evangelia   | 99716        | Ontario              |

TableB:
| AgID    | Ci         | MiIn   | NumCrCar   | AddL2                                                             |   A |   CrRat | LaNa                          | MarSt   | Ge   | Ph             | OORFl   | Coun                     | AddL1                                                                       | NuChi   |    Inc |   NuC | Em                             |            NeWor |
|:--------|:-----------|:-------|:-----------|:------------------------------------------------------------------|----:|--------:|:------------------------------|:--------|:-----|:---------------|:--------|:-------------------------|:----------------------------------------------------------------------------|:--------|-------:|------:|:-------------------------------|-----------------:|
| Iok7501 | Baltimore  | n      |            | GKOIKEZZMQTPQUQZLSAUUMVBDPAXTWNWSXTYJYQ                           |   7 |     580 | Iokwiqojocjanndatkdzgymym     | U       |      | 1-637-119-9996 | U       | United States of America | jsurlejkapodmkaccruslfkcqmbcquahsyweopxdxknl                                |         |  94490 |     3 | FM Global                      | 321776           |
| tia7502 | Kitchener  |        | 2.0        | ocmgcvnexhqhgoyrwpkgaopthdvandlzaaleqccjpjkbirtcqvorobgskhtlgndvn |  48 |     683 | tiabxgseasiibxakctfzhfwotp    | S       | M    | 1-560-405-0048 | R       | Canada                   | Ggptcoorkpeeigqzevhwhjdxdfbrmidyxsugikhgmuvvpcptuphjlgmipvhrrsgepibdupa     | 4.0     |   7037 |     4 | MGIC Investment                |      2.29232e+06 |
| AOI7503 | Saint John | u      | 2.0        | Cdrxeolwrrxmwmhgexvcstvzz                                         |  14 |     411 | AOIWIWTIHIXOJ                 | M       |      | 1-261-306-5079 | O       |                          | Gpcvjzlwouagawronludakqiuhbrbpbkkltrnlkoezgwcawpayfsnejpkmisnryphbtztbfemoy | 5.0     | 419269 |     1 | Ross Stores                    | 969707           |
| PJQ7504 | Berkeley   |        | 9.0        | WKSBVOFGJHQGAEKUYRZHHPH                                           |  29 |     818 | PJQSPMBUHYQKBOZ               | W       | m    | 1-642-299-6655 | U       | United States of America | Yxkhkvrobywpdczvwmjgxvnuduavcpyiuceglhaskahgyxqpqjbdroyojouqkzfwvfpsddisy   | 5.0     |  76681 |     4 |                                |      3.89946e+06 |
| SDV7505 | Missoula   |        | 7.0        | skxijfqpzshmts                                                    |  69 |     370 | SDVLJWXENNGWCQMIW             | U       |      |                | R       | United States of America | Ddsarhvraiskwmrddncqwvzkmjmxtgnpbtgyop                                      | 4.0     | 209116 |     2 | Alliance One International     |      3.74922e+06 |
| Hga7506 | Salinas    | F      | 6.0        | ZETOHHRKIBHCQCKZODIXJJSXCFY                                       |  47 |     833 | Hgakmykzeunwkiaxayulpwyxrcuev | U       | F    | 1-388-257-4273 | O       |                          | Ajpkrmtlcbdzr                                                               | 0.0     | 212203 |     0 | Sally Beauty Holdings          |      3.65853e+06 |
| Beo7507 | San Jose   | D      | 2.0        | LJXAXKUJXQBGWBHJJAAM                                              |   0 |     536 | Beotomyndkiqryllkvpavllytov   | M       | M    |                | U       | Canada                   | PKSTPUXQIRGWSXSKWRAJTTNBAOLQKAAJFAPGWIHBWVCHOXLE                            | 5.0     |  42018 |     5 | Wisconsin Energy               |      1.73846e+06 |
| Qum7508 | Cleveland  |        | 0.0        | Jmlgjkjbqhrudrkqrm                                                |  46 |     775 | Qumxrssnd                     | S       |      | 1-632-118-1891 | R       | United States of America | gyhrpdbplficrfirmtavitgpfmhnnhvsuoqwxrulxlqrdqkzshqovucentrxlakgkpwbrgtd    | 0.0     |  90446 |     0 | Carpenter Technology           |      3.3073e+06  |
| Hud7509 | Huntington | v      | 3.0        | Qqcilgblxyikgr                                                    |   6 |     765 | Hudlpfwjagzbnznyhamjkhbf      | M       |      | 1-853-806-4986 | R       | United States of America | GJTWIDOQOAPDVVULJGOOJBWTTANDJXOCQHWWZAGLGMJQXJOMWFTFVGXIH                   | 1.0     |  16274 |     1 | Liberty Mutual Insurance Group |      1.81642e+06 |
| jba7510 | Paterson   |        | 6.0        | Ahtohqjfzfarn                                                     |  22 |     555 | jbabemsfwdyeihxq              | M       | m    | 1-220-687-2027 | O       | Canada                   | Ycltsquohmuugxihqyluhkoy                                                    | 2.0     |  22215 |     5 | Black & Decker                 |      2.59925e+06 |



source_headers: AgencyID
City
MiddleInitial
NumberCreditCards
AddressLine2
Age
CreditRating
LastName
MaritalStatus
Gender
Phone
OwnOrRentFlag
Country
AddressLine1
NumberChildren
target_headers: AgID
Ci
MiIn
NumCrCar
AddL2
A
CrRat
LaNa
MarSt
Ge
Ph
OORFl
Coun
AddL1
NuChi
column_mappings: AgencyID
AgID
City
Ci
MiddleInitial
MiIn
NumberCreditCards
NumCrCar
AddressLine2
AddL2
Age
A
CreditRating
CrRat
LastName
LaNa
MaritalStatus
MarSt
Gender
Ge
Phone
Ph
OwnOrRentFlag
OORFl
Country
Coun
AddressLine1
AddL1
NumberChildren
NuChi
output: {"column_mappings": [["AgencyID", "AgID"], ["City", "Ci"], ["MiddleInitial", "MiIn"], ["NumberCreditCards", "NumCrCar"], ["AddressLine2", "AddL2"], ["Age", "A"], ["CreditRating", "CrRat"], ["LastName", "LaNa"], ["MaritalStatus", "MarSt"], ["Gender", "Ge"], ["Phone", "Ph"], ["OwnOrRentFlag", "OORFl"], ["Country", "Coun"], ["AddressLine1", "AddL1"], ["NumberChildren", "NuChi"], ["FirstName", null], ["PostalCode", null], ["State", null]]}