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   | Phone          | LastName   | Country               | FirstName   |         NetWorth | MiddleInitial   | Age   | Employer             | PostalCode   | Gender   | AddressLine1         | AddressLine2   | City           | State                |   Income |
|:-----------|:---------------|:-----------|:----------------------|:------------|-----------------:|:----------------|:------|:---------------------|:-------------|:---------|:---------------------|:---------------|:---------------|:---------------------|---------:|
| PEL0       | 1 712 522 6088 | PELLAhD    | Un7tedStafesorAmeruca | jetti       |      4.33865e+06 |                 | 54.0  | Bginks               | T6b1k1       | f        | 21847 olympia street |                | Fairbanks      | MA                   |   368776 |
| LED1       | 1 626 426 4298 | L2DUC      | UnktedztatwsofAkerica | TRUsY       |      2.06841e+06 |                 | 28.0  |                      | 77281        | F        | 245 congress court   | APT. 624       | Quebec         | PA                   |   177967 |
| lat2       | 1 524 787 8784 | latie      | UnitefStzt3sofAm4rica | irsland     |      2.12346e+06 |                 |       |                      | 91355        |          | 6517 frailing west   |                | Henderson      | Alberta              |   321772 |
| RUD3       | 1 741 997 1688 | RUDeICK    | Canava                | Mist9       |      2.67986e+06 |                 | 25.0  | AirP4odkstsCyemicals | 36615        |          | 11449 blalock park   |                | Salem          | AR                   |    25449 |
| JAY4       | 1 002 194 1991 | JAYsMANNE  | Canawa                | ssrena      | 505016           | M               | 50.0  | 8shkosh              | t6x1i3       | f        | 18354 dodd court     | Apt. 619       | Toledo         | OR                   |   166567 |
| tod5       | 1 441 371 7651 | todo       | UnitedS6qtesorAme5ica | laulette    |      4.81659e+06 | Z               | 39.0  |                      | A3b1v3       | M        | 14117 roxboro street |                | Corpus Christi | VA                   |    43631 |
| Kan6       | 1 957 940 5980 | Kamno      | Canwda                | xMALITA     | 349330           | R               | 69.0  | VeraduhEnergy        | 49513        | m        | 24697 FLORENCE WEST  |                | Salt Lake City | OH                   |   466230 |
| Din7       | 1 768 633 4096 | Dink3l     | yni5edStatespfAm3rica | E5nesto     |      3.88838e+06 | Z               | 62.0  | IDT                  | h5d1v6       |          | 6488 applewood drive |                | Brownsville    | Prince Edward Island |   420243 |
| Thi8       | 1 107 689 2155 | Thivideaux | UnitesStar3sofAmeruca | Toby        |      3.60179e+06 |                 | 24.0  | xdamsR2sourcecEnervy | V6c2q1       |          | 17404 gale court     |                | Escondido      | NV                   |   141862 |
| May9       | 1 173 594 6096 | Mayo       | UnitedatatesogAne3ica | evangflia   |      4.13272e+06 |                 | 67.0  | MGICIndesyment       | 99716        |          | 15913 alexis street  |                | Los Angeles    | Ontario              |   402011 |

TableB:
| AgencyID   | Phone          | LastName   | Country                  | FirstName   |         NetWorth | MiddleInitial   | Age   | Employer                 | PostalCode   | Gender   | NumberCars   | NumberChildren   | MaritalStatus   | CreditRating   | OwnOrRentFlag   | NumberCreditCards   |
|:-----------|:---------------|:-----------|:-------------------------|:------------|-----------------:|:----------------|:------|:-------------------------|:-------------|:---------|:-------------|:-----------------|:----------------|:---------------|:----------------|:--------------------|
| PEL0       | 1-712-522-6088 | PELLAND    | United States of America | Netti       |      1.05887e+06 |                 | 20.0  | Brink's                  | T6b 1i1      | f        |              | 3.0              | W               | 760.0          | O               |                     |
| LED1       | 1-626-426-4298 | LEDUC      | United States of America | TRUDY       |      1.98818e+06 |                 | 3.0   |                          | 77281        | F        | 5.0          | 1.0              | U               | 555.0          | U               | 6.0                 |
| lat2       | 1-524-787-8784 | latif      | United States of America | ireland     |      3.67313e+06 |                 |       |                          | 91355        |          | 2.0          | 1.0              | S               | 566.0          | O               | 6.0                 |
| RUD3       | 1-741-997-1688 | RUDDICK    | Canada                   | Misti       |      2.0059e+06  |                 | 77.0  | Air Products & Chemicals | 36615        |          | 2.0          | 1.0              | W               |                | O               | 3.0                 |
| JAY4       | 1-002-194-1991 | JAYAMANNE  | Canada                   | sarena      | 624736           | M               | 21.0  | Oshkosh                  | t6a 1i3      | f        | 0.0          | 3.0              | M               | 815.0          | O               | 4.0                 |
| tod5       | 1-441-371-7651 | todo       | United States of America | Paulette    |      3.06462e+06 | Z               | 77.0  |                          | A2b 1v3      | M        | 1.0          | 4.0              | M               | 333.0          | R               | 10.0                |
| Kan6       | 1-957-940-5980 | Kanno      | Canada                   | AMALITA     |      3.48913e+06 | R               | 23.0  | VeraSun Energy           | 49513        | m        | 4.0          | 0.0              |                 | 528.0          | O               | 1.0                 |
| Din7       | 1-768-633-4096 | Dinkel     | United States of America | Ernesto     |      3.43074e+06 | Z               | 9.0   | IDT                      | M5d 1v6      |          | 2.0          | 2.0              | M               | 680.0          | U               | 7.0                 |
| Thi8       | 1-107-689-2155 | Thibodeaux | United States of America | Toby        |      1.74361e+06 |                 | 63.0  | Adams Resources & Energy | V6c 1q1      |          | 3.0          |                  | U               | 761.0          | O               | 10.0                |
| May9       | 1-173-594-6096 | Mayo       | United States of America | evangelia   | 216299           |                 | 32.0  | MGIC Investment          | 99716        |          | 0.0          | 2.0              | M               | 416.0          | O               |                     |



source_headers: AgencyID
Phone
LastName
Country
FirstName
NetWorth
MiddleInitial
Age
Employer
PostalCode
Gender
target_headers: AgencyID
Phone
LastName
Country
FirstName
NetWorth
MiddleInitial
Age
Employer
PostalCode
Gender
column_mappings: AgencyID
AgencyID
Phone
Phone
LastName
LastName
Country
Country
FirstName
FirstName
NetWorth
NetWorth
MiddleInitial
MiddleInitial
Age
Age
Employer
Employer
PostalCode
PostalCode
Gender
Gender
output: {"column_mappings": [["AgencyID", "AgencyID"], ["Phone", "Phone"], ["LastName", "LastName"], ["Country", "Country"], ["FirstName", "FirstName"], ["NetWorth", "NetWorth"], ["MiddleInitial", "MiddleInitial"], ["Age", "Age"], ["Employer", "Employer"], ["PostalCode", "PostalCode"], ["Gender", "Gender"], ["AddressLine1", null], ["AddressLine2", null], ["City", null], ["State", null], ["Income", null]]}