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   | CreditRating   | Employer                 | OwnOrRentFlag   | AddressLine1         | Phone          |         NetWorth | PostalCode   |   Income | MaritalStatus   | Age   | Country                  | Gender   | State                | NumberCreditCards   | LastName   | FirstName   | MiddleInitial   |
|:-----------|:---------------|:-------------------------|:----------------|:---------------------|:---------------|-----------------:|:-------------|---------:|:----------------|:------|:-------------------------|:---------|:---------------------|:--------------------|:-----------|:------------|:----------------|
| PEL0       | 760.0          | Brink's                  | O               | 21847 olympia street | 1-712-522-6088 |      1.05887e+06 | T6b 1i1      |   368776 | W               | 20.0  | United States of America | f        | MA                   |                     | PELLAND    | Netti       |                 |
| LED1       | 555.0          |                          | U               | 245 congress court   | 1-626-426-4298 |      1.98818e+06 | 77281        |   177967 | U               | 3.0   | United States of America | F        | PA                   | 6.0                 | LEDUC      | TRUDY       |                 |
| lat2       | 566.0          |                          | O               | 6517 frailing west   | 1-524-787-8784 |      3.67313e+06 | 91355        |   321772 | S               |       | United States of America |          | Alberta              | 6.0                 | latif      | ireland     |                 |
| RUD3       |                | Air Products & Chemicals | O               | 11449 blalock park   | 1-741-997-1688 |      2.0059e+06  | 36615        |    25449 | W               | 77.0  | Canada                   |          | AR                   | 3.0                 | RUDDICK    | Misti       |                 |
| JAY4       | 815.0          | Oshkosh                  | O               | 18354 dodd court     | 1-002-194-1991 | 624736           | t6a 1i3      |   166567 | M               | 21.0  | Canada                   | f        | OR                   | 4.0                 | JAYAMANNE  | sarena      | M               |
| tod5       | 333.0          |                          | R               | 14117 roxboro street | 1-441-371-7651 |      3.06462e+06 | A2b 1v3      |    43631 | M               | 77.0  | United States of America | M        | VA                   | 10.0                | todo       | Paulette    | Z               |
| Kan6       | 528.0          | VeraSun Energy           | O               | 24697 FLORENCE WEST  | 1-957-940-5980 |      3.48913e+06 | 49513        |   466230 |                 | 23.0  | Canada                   | m        | OH                   | 1.0                 | Kanno      | AMALITA     | R               |
| Din7       | 680.0          | IDT                      | U               | 6488 applewood drive | 1-768-633-4096 |      3.43074e+06 | M5d 1v6      |   420243 | M               | 9.0   | United States of America |          | Prince Edward Island | 7.0                 | Dinkel     | Ernesto     | Z               |
| Thi8       | 761.0          | Adams Resources & Energy | O               | 17404 gale court     | 1-107-689-2155 |      1.74361e+06 | V6c 1q1      |   141862 | U               | 63.0  | United States of America |          | NV                   | 10.0                | Thibodeaux | Toby        |                 |
| May9       | 416.0          | MGIC Investment          | O               | 15913 alexis street  | 1-173-594-6096 | 216299           | 99716        |   402011 | M               | 32.0  | United States of America |          | Ontario              |                     | Mayo       | evangelia   |                 |

TableB:
| AgencyID   | CreditRating   | Employer                 | OwnOrRentFlag   | AddressLine1         | Phone          |         NetWorth | PostalCode   |   Income | MaritalStatus   | Age   | Country                  | Gender   | State                | NumberCreditCards   | AddressLine2   | City           | NumberCars   | NumberChildren   |
|:-----------|:---------------|:-------------------------|:----------------|:---------------------|:---------------|-----------------:|:-------------|---------:|:----------------|:------|:-------------------------|:---------|:---------------------|:--------------------|:---------------|:---------------|:-------------|:-----------------|
| PEL0       | 760.0          | Brink's                  | O               | 21847 olympia street | 1-712-522-6088 |      1.05887e+06 | T6b 1i1      |   368776 | W               | 20.0  | United States of America | f        | MA                   |                     |                | Fairbanks      |              | 3.0              |
| LED1       | 555.0          |                          | U               | 245 congress court   | 1-626-426-4298 |      1.98818e+06 | 77281        |   177967 | U               | 3.0   | United States of America | F        | PA                   | 6.0                 | APT. 624       | Quebec         | 5.0          | 1.0              |
| lat2       | 566.0          |                          | O               | 6517 frailing west   | 1-524-787-8784 |      3.67313e+06 | 91355        |   321772 | S               |       | United States of America |          | Alberta              | 6.0                 |                | Henderson      | 2.0          | 1.0              |
| RUD3       |                | Air Products & Chemicals | O               | 11449 blalock park   | 1-741-997-1688 |      2.0059e+06  | 36615        |    25449 | W               | 77.0  | Canada                   |          | AR                   | 3.0                 |                | Salem          | 2.0          | 1.0              |
| JAY4       | 815.0          | Oshkosh                  | O               | 18354 dodd court     | 1-002-194-1991 | 624736           | t6a 1i3      |   166567 | M               | 21.0  | Canada                   | f        | OR                   | 4.0                 | Apt. 619       | Toledo         | 0.0          | 3.0              |
| tod5       | 333.0          |                          | R               | 14117 roxboro street | 1-441-371-7651 |      3.06462e+06 | A2b 1v3      |    43631 | M               | 77.0  | United States of America | M        | VA                   | 10.0                |                | Corpus Christi | 1.0          | 4.0              |
| Kan6       | 528.0          | VeraSun Energy           | O               | 24697 FLORENCE WEST  | 1-957-940-5980 |      3.48913e+06 | 49513        |   466230 |                 | 23.0  | Canada                   | m        | OH                   | 1.0                 |                | Salt Lake City | 4.0          | 0.0              |
| Din7       | 680.0          | IDT                      | U               | 6488 applewood drive | 1-768-633-4096 |      3.43074e+06 | M5d 1v6      |   420243 | M               | 9.0   | United States of America |          | Prince Edward Island | 7.0                 |                | Brownsville    | 2.0          | 2.0              |
| Thi8       | 761.0          | Adams Resources & Energy | O               | 17404 gale court     | 1-107-689-2155 |      1.74361e+06 | V6c 1q1      |   141862 | U               | 63.0  | United States of America |          | NV                   | 10.0                |                | Escondido      | 3.0          |                  |
| May9       | 416.0          | MGIC Investment          | O               | 15913 alexis street  | 1-173-594-6096 | 216299           | 99716        |   402011 | M               | 32.0  | United States of America |          | Ontario              |                     |                | Los Angeles    | 0.0          | 2.0              |



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