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

TableB:
| prospect_AgencyID   | prospect_Country         | prospect_AddressLine1   | prospect_OwnOrRentFlag   | prospect_MaritalStatus   | prospect_Gender   |   prospect_Income | prospect_NumberCars   | prospect_NumberChildren   | prospect_Age   | prospect_CreditRating   | prospect_Employer        | prospect_NumberCreditCards   |   prospect_NetWorth |
|:--------------------|:-------------------------|:------------------------|:-------------------------|:-------------------------|:------------------|------------------:|:----------------------|:--------------------------|:---------------|:------------------------|:-------------------------|:-----------------------------|--------------------:|
| PEL0                | United States of America | 21847 olympia street    | O                        | W                        | f                 |            368776 |                       | 3.0                       | 20.0           | 760.0                   | Brink's                  |                              |         1.05887e+06 |
| LED1                | United States of America | 245 congress court      | U                        | U                        | F                 |            177967 | 5.0                   | 1.0                       | 3.0            | 555.0                   |                          | 6.0                          |         1.98818e+06 |
| lat2                | United States of America | 6517 frailing west      | O                        | S                        |                   |            321772 | 2.0                   | 1.0                       |                | 566.0                   |                          | 6.0                          |         3.67313e+06 |
| RUD3                | Canada                   | 11449 blalock park      | O                        | W                        |                   |             25449 | 2.0                   | 1.0                       | 77.0           |                         | Air Products & Chemicals | 3.0                          |         2.0059e+06  |
| JAY4                | Canada                   | 18354 dodd court        | O                        | M                        | f                 |            166567 | 0.0                   | 3.0                       | 21.0           | 815.0                   | Oshkosh                  | 4.0                          |    624736           |
| tod5                | United States of America | 14117 roxboro street    | R                        | M                        | M                 |             43631 | 1.0                   | 4.0                       | 77.0           | 333.0                   |                          | 10.0                         |         3.06462e+06 |
| Kan6                | Canada                   | 24697 FLORENCE WEST     | O                        |                          | m                 |            466230 | 4.0                   | 0.0                       | 23.0           | 528.0                   | VeraSun Energy           | 1.0                          |         3.48913e+06 |
| Din7                | United States of America | 6488 applewood drive    | U                        | M                        |                   |            420243 | 2.0                   | 2.0                       | 9.0            | 680.0                   | IDT                      | 7.0                          |         3.43074e+06 |
| Thi8                | United States of America | 17404 gale court        | O                        | U                        |                   |            141862 | 3.0                   |                           | 63.0           | 761.0                   | Adams Resources & Energy | 10.0                         |         1.74361e+06 |
| May9                | United States of America | 15913 alexis street     | O                        | M                        |                   |            402011 | 0.0                   | 2.0                       | 32.0           | 416.0                   | MGIC Investment          |                              |    216299           |



source_headers: AgencyID
Country
AddressLine1
OwnOrRentFlag
MaritalStatus
Gender
target_headers: prospect_AgencyID
prospect_Country
prospect_AddressLine1
prospect_OwnOrRentFlag
prospect_MaritalStatus
prospect_Gender
column_mappings: AgencyID
prospect_AgencyID
Country
prospect_Country
AddressLine1
prospect_AddressLine1
OwnOrRentFlag
prospect_OwnOrRentFlag
MaritalStatus
prospect_MaritalStatus
Gender
prospect_Gender
output: {"column_mappings": [["AgencyID", "prospect_AgencyID"], ["Country", "prospect_Country"], ["AddressLine1", "prospect_AddressLine1"], ["OwnOrRentFlag", "prospect_OwnOrRentFlag"], ["MaritalStatus", "prospect_MaritalStatus"], ["Gender", "prospect_Gender"], ["LastName", null], ["FirstName", null], ["MiddleInitial", null], ["AddressLine2", null], ["PostalCode", null], ["City", null], ["State", null], ["Phone", null]]}