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   | Gender   | MiddleInitial   | Employer                 | State                | Age   | AddressLine2   | OwnOrRentFlag   |   Income | City           | NumberCars   | NumberCreditCards   |         NetWorth | MaritalStatus   | FirstName   | LastName   | AddressLine1         | PostalCode   |
|:-----------|:---------|:----------------|:-------------------------|:---------------------|:------|:---------------|:----------------|---------:|:---------------|:-------------|:--------------------|-----------------:|:----------------|:------------|:-----------|:---------------------|:-------------|
| PEL0       | f        |                 | Brink's                  | MA                   | 20.0  |                | O               |   368776 | Fairbanks      |              |                     |      1.05887e+06 | W               | Netti       | PELLAND    | 21847 olympia street | T6b 1i1      |
| LED1       | F        |                 |                          | PA                   | 3.0   | APT. 624       | U               |   177967 | Quebec         | 5.0          | 6.0                 |      1.98818e+06 | U               | TRUDY       | LEDUC      | 245 congress court   | 77281        |
| lat2       |          |                 |                          | Alberta              |       |                | O               |   321772 | Henderson      | 2.0          | 6.0                 |      3.67313e+06 | S               | ireland     | latif      | 6517 frailing west   | 91355        |
| RUD3       |          |                 | Air Products & Chemicals | AR                   | 77.0  |                | O               |    25449 | Salem          | 2.0          | 3.0                 |      2.0059e+06  | W               | Misti       | RUDDICK    | 11449 blalock park   | 36615        |
| JAY4       | f        | M               | Oshkosh                  | OR                   | 21.0  | Apt. 619       | O               |   166567 | Toledo         | 0.0          | 4.0                 | 624736           | M               | sarena      | JAYAMANNE  | 18354 dodd court     | t6a 1i3      |
| tod5       | M        | Z               |                          | VA                   | 77.0  |                | R               |    43631 | Corpus Christi | 1.0          | 10.0                |      3.06462e+06 | M               | Paulette    | todo       | 14117 roxboro street | A2b 1v3      |
| Kan6       | m        | R               | VeraSun Energy           | OH                   | 23.0  |                | O               |   466230 | Salt Lake City | 4.0          | 1.0                 |      3.48913e+06 |                 | AMALITA     | Kanno      | 24697 FLORENCE WEST  | 49513        |
| Din7       |          | Z               | IDT                      | Prince Edward Island | 9.0   |                | U               |   420243 | Brownsville    | 2.0          | 7.0                 |      3.43074e+06 | M               | Ernesto     | Dinkel     | 6488 applewood drive | M5d 1v6      |
| Thi8       |          |                 | Adams Resources & Energy | NV                   | 63.0  |                | O               |   141862 | Escondido      | 3.0          | 10.0                |      1.74361e+06 | U               | Toby        | Thibodeaux | 17404 gale court     | V6c 1q1      |
| May9       |          |                 | MGIC Investment          | Ontario              | 32.0  |                | O               |   402011 | Los Angeles    | 0.0          |                     | 216299           | M               | evangelia   | Mayo       | 15913 alexis street  | 99716        |

TableB:
| prospect_AgID   | prospect_Ge   | prospect_MidInit   | prospect_Emp             | prospect_St          | prospect_A   | prospect_AddL2   | prospect_OORFl   |   prospect_In | prospect_Ci    | prospect_NuCa   | prospect_NumCreCar   |    prospect_NWor | prospect_MaSta   | prospect_FirN   | prospect_Coun            | prospect_Ph    | prospect_NumChil   | prospect_CrRat   |
|:----------------|:--------------|:-------------------|:-------------------------|:---------------------|:-------------|:-----------------|:-----------------|--------------:|:---------------|:----------------|:---------------------|-----------------:|:-----------------|:----------------|:-------------------------|:---------------|:-------------------|:-----------------|
| PEL0            | f             |                    | Brink's                  | MA                   | 20.0         |                  | O                |        368776 | Fairbanks      |                 |                      |      1.05887e+06 | W                | Netti           | United States of America | 1-712-522-6088 | 3.0                | 760.0            |
| LED1            | F             |                    |                          | PA                   | 3.0          | APT. 624         | U                |        177967 | Quebec         | 5.0             | 6.0                  |      1.98818e+06 | U                | TRUDY           | United States of America | 1-626-426-4298 | 1.0                | 555.0            |
| lat2            |               |                    |                          | Alberta              |              |                  | O                |        321772 | Henderson      | 2.0             | 6.0                  |      3.67313e+06 | S                | ireland         | United States of America | 1-524-787-8784 | 1.0                | 566.0            |
| RUD3            |               |                    | Air Products & Chemicals | AR                   | 77.0         |                  | O                |         25449 | Salem          | 2.0             | 3.0                  |      2.0059e+06  | W                | Misti           | Canada                   | 1-741-997-1688 | 1.0                |                  |
| JAY4            | f             | M                  | Oshkosh                  | OR                   | 21.0         | Apt. 619         | O                |        166567 | Toledo         | 0.0             | 4.0                  | 624736           | M                | sarena          | Canada                   | 1-002-194-1991 | 3.0                | 815.0            |
| tod5            | M             | Z                  |                          | VA                   | 77.0         |                  | R                |         43631 | Corpus Christi | 1.0             | 10.0                 |      3.06462e+06 | M                | Paulette        | United States of America | 1-441-371-7651 | 4.0                | 333.0            |
| Kan6            | m             | R                  | VeraSun Energy           | OH                   | 23.0         |                  | O                |        466230 | Salt Lake City | 4.0             | 1.0                  |      3.48913e+06 |                  | AMALITA         | Canada                   | 1-957-940-5980 | 0.0                | 528.0            |
| Din7            |               | Z                  | IDT                      | Prince Edward Island | 9.0          |                  | U                |        420243 | Brownsville    | 2.0             | 7.0                  |      3.43074e+06 | M                | Ernesto         | United States of America | 1-768-633-4096 | 2.0                | 680.0            |
| Thi8            |               |                    | Adams Resources & Energy | NV                   | 63.0         |                  | O                |        141862 | Escondido      | 3.0             | 10.0                 |      1.74361e+06 | U                | Toby            | United States of America | 1-107-689-2155 |                    | 761.0            |
| May9            |               |                    | MGIC Investment          | Ontario              | 32.0         |                  | O                |        402011 | Los Angeles    | 0.0             |                      | 216299           | M                | evangelia       | United States of America | 1-173-594-6096 | 2.0                | 416.0            |



source_headers: AgencyID
Gender
MiddleInitial
Employer
State
Age
AddressLine2
OwnOrRentFlag
Income
City
NumberCars
NumberCreditCards
NetWorth
MaritalStatus
FirstName
target_headers: prospect_AgID
prospect_Ge
prospect_MidInit
prospect_Emp
prospect_St
prospect_A
prospect_AddL2
prospect_OORFl
prospect_In
prospect_Ci
prospect_NuCa
prospect_NumCreCar
prospect_NWor
prospect_MaSta
prospect_FirN
column_mappings: AgencyID
prospect_AgID
Gender
prospect_Ge
MiddleInitial
prospect_MidInit
Employer
prospect_Emp
State
prospect_St
Age
prospect_A
AddressLine2
prospect_AddL2
OwnOrRentFlag
prospect_OORFl
Income
prospect_In
City
prospect_Ci
NumberCars
prospect_NuCa
NumberCreditCards
prospect_NumCreCar
NetWorth
prospect_NWor
MaritalStatus
prospect_MaSta
FirstName
prospect_FirN
output: {"column_mappings": [["AgencyID", "prospect_AgID"], ["Gender", "prospect_Ge"], ["MiddleInitial", "prospect_MidInit"], ["Employer", "prospect_Emp"], ["State", "prospect_St"], ["Age", "prospect_A"], ["AddressLine2", "prospect_AddL2"], ["OwnOrRentFlag", "prospect_OORFl"], ["Income", "prospect_In"], ["City", "prospect_Ci"], ["NumberCars", "prospect_NuCa"], ["NumberCreditCards", "prospect_NumCreCar"], ["NetWorth", "prospect_NWor"], ["MaritalStatus", "prospect_MaSta"], ["FirstName", "prospect_FirN"], ["LastName", null], ["AddressLine1", null], ["PostalCode", null]]}