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   | FirstName   | Age   | MiddleInitial   | MaritalStatus   | NumberCreditCards   | NumberChildren   | OwnOrRentFlag   | LastName   | CreditRating   | NumberCars   | Gender   | AddressLine1         | AddressLine2   | PostalCode   | City           |
|:-----------|:------------|:------|:----------------|:----------------|:--------------------|:-----------------|:----------------|:-----------|:---------------|:-------------|:---------|:---------------------|:---------------|:-------------|:---------------|
| PEL0       | Netti       | 20.0  |                 | W               |                     | 3.0              | O               | PELLAND    | 760.0          |              | f        | 21847 olympia street |                | T6b 1i1      | Fairbanks      |
| LED1       | TRUDY       | 3.0   |                 | U               | 6.0                 | 1.0              | U               | LEDUC      | 555.0          | 5.0          | F        | 245 congress court   | APT. 624       | 77281        | Quebec         |
| lat2       | ireland     |       |                 | S               | 6.0                 | 1.0              | O               | latif      | 566.0          | 2.0          |          | 6517 frailing west   |                | 91355        | Henderson      |
| RUD3       | Misti       | 77.0  |                 | W               | 3.0                 | 1.0              | O               | RUDDICK    |                | 2.0          |          | 11449 blalock park   |                | 36615        | Salem          |
| JAY4       | sarena      | 21.0  | M               | M               | 4.0                 | 3.0              | O               | JAYAMANNE  | 815.0          | 0.0          | f        | 18354 dodd court     | Apt. 619       | t6a 1i3      | Toledo         |
| tod5       | Paulette    | 77.0  | Z               | M               | 10.0                | 4.0              | R               | todo       | 333.0          | 1.0          | M        | 14117 roxboro street |                | A2b 1v3      | Corpus Christi |
| Kan6       | AMALITA     | 23.0  | R               |                 | 1.0                 | 0.0              | O               | Kanno      | 528.0          | 4.0          | m        | 24697 FLORENCE WEST  |                | 49513        | Salt Lake City |
| Din7       | Ernesto     | 9.0   | Z               | M               | 7.0                 | 2.0              | U               | Dinkel     | 680.0          | 2.0          |          | 6488 applewood drive |                | M5d 1v6      | Brownsville    |
| Thi8       | Toby        | 63.0  |                 | U               | 10.0                |                  | O               | Thibodeaux | 761.0          | 3.0          |          | 17404 gale court     |                | V6c 1q1      | Escondido      |
| May9       | evangelia   | 32.0  |                 | M               |                     | 2.0              | O               | Mayo       | 416.0          | 0.0          |          | 15913 alexis street  |                | 99716        | Los Angeles    |

TableB:
| AgencyID   | FirstName   | Age   | MiddleInitial   | MaritalStatus   | NumberCreditCards   | NumberChildren   | OwnOrRentFlag   | LastName   | CreditRating   | NumberCars   | State                | Country                  | Phone          |   Income | Employer                 |         NetWorth |
|:-----------|:------------|:------|:----------------|:----------------|:--------------------|:-----------------|:----------------|:-----------|:---------------|:-------------|:---------------------|:-------------------------|:---------------|---------:|:-------------------------|-----------------:|
| PEL0       | Netti       | 20.0  |                 | W               |                     | 3.0              | O               | PELLAND    | 760.0          |              | MA                   | United States of America | 1-712-522-6088 |   368776 | Brink's                  |      1.05887e+06 |
| LED1       | TRUDY       | 3.0   |                 | U               | 6.0                 | 1.0              | U               | LEDUC      | 555.0          | 5.0          | PA                   | United States of America | 1-626-426-4298 |   177967 |                          |      1.98818e+06 |
| lat2       | ireland     |       |                 | S               | 6.0                 | 1.0              | O               | latif      | 566.0          | 2.0          | Alberta              | United States of America | 1-524-787-8784 |   321772 |                          |      3.67313e+06 |
| RUD3       | Misti       | 77.0  |                 | W               | 3.0                 | 1.0              | O               | RUDDICK    |                | 2.0          | AR                   | Canada                   | 1-741-997-1688 |    25449 | Air Products & Chemicals |      2.0059e+06  |
| JAY4       | sarena      | 21.0  | M               | M               | 4.0                 | 3.0              | O               | JAYAMANNE  | 815.0          | 0.0          | OR                   | Canada                   | 1-002-194-1991 |   166567 | Oshkosh                  | 624736           |
| tod5       | Paulette    | 77.0  | Z               | M               | 10.0                | 4.0              | R               | todo       | 333.0          | 1.0          | VA                   | United States of America | 1-441-371-7651 |    43631 |                          |      3.06462e+06 |
| Kan6       | AMALITA     | 23.0  | R               |                 | 1.0                 | 0.0              | O               | Kanno      | 528.0          | 4.0          | OH                   | Canada                   | 1-957-940-5980 |   466230 | VeraSun Energy           |      3.48913e+06 |
| Din7       | Ernesto     | 9.0   | Z               | M               | 7.0                 | 2.0              | U               | Dinkel     | 680.0          | 2.0          | Prince Edward Island | United States of America | 1-768-633-4096 |   420243 | IDT                      |      3.43074e+06 |
| Thi8       | Toby        | 63.0  |                 | U               | 10.0                |                  | O               | Thibodeaux | 761.0          | 3.0          | NV                   | United States of America | 1-107-689-2155 |   141862 | Adams Resources & Energy |      1.74361e+06 |
| May9       | evangelia   | 32.0  |                 | M               |                     | 2.0              | O               | Mayo       | 416.0          | 0.0          | Ontario              | United States of America | 1-173-594-6096 |   402011 | MGIC Investment          | 216299           |



source_headers: AgencyID
FirstName
Age
MiddleInitial
MaritalStatus
NumberCreditCards
NumberChildren
OwnOrRentFlag
LastName
CreditRating
NumberCars
target_headers: AgencyID
FirstName
Age
MiddleInitial
MaritalStatus
NumberCreditCards
NumberChildren
OwnOrRentFlag
LastName
CreditRating
NumberCars
column_mappings: AgencyID
AgencyID
FirstName
FirstName
Age
Age
MiddleInitial
MiddleInitial
MaritalStatus
MaritalStatus
NumberCreditCards
NumberCreditCards
NumberChildren
NumberChildren
OwnOrRentFlag
OwnOrRentFlag
LastName
LastName
CreditRating
CreditRating
NumberCars
NumberCars
output: {"column_mappings": [["AgencyID", "AgencyID"], ["FirstName", "FirstName"], ["Age", "Age"], ["MiddleInitial", "MiddleInitial"], ["MaritalStatus", "MaritalStatus"], ["NumberCreditCards", "NumberCreditCards"], ["NumberChildren", "NumberChildren"], ["OwnOrRentFlag", "OwnOrRentFlag"], ["LastName", "LastName"], ["CreditRating", "CreditRating"], ["NumberCars", "NumberCars"], ["Gender", null], ["AddressLine1", null], ["AddressLine2", null], ["PostalCode", null], ["City", null]]}