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   | State              | AddressLine2   | Country               | Employer             | CreditRating   | LastName   | FirstName   | MiddleInitial   | Gender   | AddressLine1         | PostalCode   | City           | Phone          |
|:-----------|:-------------------|:---------------|:----------------------|:---------------------|:---------------|:-----------|:------------|:----------------|:---------|:---------------------|:-------------|:---------------|:---------------|
| PEL0       | MA                 |                | UnitedStageqofwmerida | Bdinks               | 378.0          | PELLAND    | Netti       |                 | f        | 21847 olympia street | T6b 1i1      | Fairbanks      | 1-712-522-6088 |
| LED1       | PA                 | APT62r         | ynitedStatwsofAmrrlca |                      | 351.0          | LEDUC      | TRUDY       |                 | F        | 245 congress court   | 77281        | Quebec         | 1-626-426-4298 |
| lat2       | Alb3rta            |                | UnitedSyages0fAme5ica |                      | 454.0          | latif      | ireland     |                 |          | 6517 frailing west   | 91355        | Henderson      | 1-524-787-8784 |
| RUD3       | AR                 |                | Canaca                | A7rPrkdudtzChemicals |                | RUDDICK    | Misti       |                 |          | 11449 blalock park   | 36615        | Salem          | 1-741-997-1688 |
| JAY4       | OR                 | wpt619         | Cajada                | Osmkosh              | 323.0          | JAYAMANNE  | sarena      | M               | f        | 18354 dodd court     | t6a 1i3      | Toledo         | 1-002-194-1991 |
| tod5       | VA                 |                | UnitedSgafesofAmdr7ca |                      | 407.0          | todo       | Paulette    | Z               | M        | 14117 roxboro street | A2b 1v3      | Corpus Christi | 1-441-371-7651 |
| Kan6       | OH                 |                | Cajada                | VeraSunEn4rgt        | 460.0          | Kanno      | AMALITA     | R               | m        | 24697 FLORENCE WEST  | 49513        | Salt Lake City | 1-957-940-5980 |
| Din7       | PrinceEdwafdIslwbd |                | UnitewStqteskfAmericq | IDT                  | 406.0          | Dinkel     | Ernesto     | Z               |          | 6488 applewood drive | M5d 1v6      | Brownsville    | 1-768-633-4096 |
| Thi8       | NV                 |                | UnitedwtatesogAm4rifa | wdaksR2sourc3sEnergy | 415.0          | Thibodeaux | Toby        |                 |          | 17404 gale court     | V6c 1q1      | Escondido      | 1-107-689-2155 |
| May9       | Obtario            |                | Unit3dwtatesofAherlca | MGIC7nves4ment       | 403.0          | Mayo       | evangelia   |                 |          | 15913 alexis street  | 99716        | Los Angeles    | 1-173-594-6096 |

TableB:
| prospect_AgencyID   | prospect_State       | prospect_AddressLine2   | prospect_Country         | prospect_Employer        | prospect_CreditRating   |   prospect_Income | prospect_NumberCars   | prospect_NumberChildren   | prospect_MaritalStatus   | prospect_Age   | prospect_OwnOrRentFlag   | prospect_NumberCreditCards   |   prospect_NetWorth |
|:--------------------|:---------------------|:------------------------|:-------------------------|:-------------------------|:------------------------|------------------:|:----------------------|:--------------------------|:-------------------------|:---------------|:-------------------------|:-----------------------------|--------------------:|
| PEL0                | MA                   |                         | United States of America | Brink's                  | 760.0                   |            368776 |                       | 3.0                       | W                        | 20.0           | O                        |                              |         1.05887e+06 |
| LED1                | PA                   | APT. 624                | United States of America |                          | 555.0                   |            177967 | 5.0                   | 1.0                       | U                        | 3.0            | U                        | 6.0                          |         1.98818e+06 |
| lat2                | Alberta              |                         | United States of America |                          | 566.0                   |            321772 | 2.0                   | 1.0                       | S                        |                | O                        | 6.0                          |         3.67313e+06 |
| RUD3                | AR                   |                         | Canada                   | Air Products & Chemicals |                         |             25449 | 2.0                   | 1.0                       | W                        | 77.0           | O                        | 3.0                          |         2.0059e+06  |
| JAY4                | OR                   | Apt. 619                | Canada                   | Oshkosh                  | 815.0                   |            166567 | 0.0                   | 3.0                       | M                        | 21.0           | O                        | 4.0                          |    624736           |
| tod5                | VA                   |                         | United States of America |                          | 333.0                   |             43631 | 1.0                   | 4.0                       | M                        | 77.0           | R                        | 10.0                         |         3.06462e+06 |
| Kan6                | OH                   |                         | Canada                   | VeraSun Energy           | 528.0                   |            466230 | 4.0                   | 0.0                       |                          | 23.0           | O                        | 1.0                          |         3.48913e+06 |
| Din7                | Prince Edward Island |                         | United States of America | IDT                      | 680.0                   |            420243 | 2.0                   | 2.0                       | M                        | 9.0            | U                        | 7.0                          |         3.43074e+06 |
| Thi8                | NV                   |                         | United States of America | Adams Resources & Energy | 761.0                   |            141862 | 3.0                   |                           | U                        | 63.0           | O                        | 10.0                         |         1.74361e+06 |
| May9                | Ontario              |                         | United States of America | MGIC Investment          | 416.0                   |            402011 | 0.0                   | 2.0                       | M                        | 32.0           | O                        |                              |    216299           |



source_headers: AgencyID
State
AddressLine2
Country
Employer
CreditRating
target_headers: prospect_AgencyID
prospect_State
prospect_AddressLine2
prospect_Country
prospect_Employer
prospect_CreditRating
column_mappings: AgencyID
prospect_AgencyID
State
prospect_State
AddressLine2
prospect_AddressLine2
Country
prospect_Country
Employer
prospect_Employer
CreditRating
prospect_CreditRating
output: {"column_mappings": [["AgencyID", "prospect_AgencyID"], ["State", "prospect_State"], ["AddressLine2", "prospect_AddressLine2"], ["Country", "prospect_Country"], ["Employer", "prospect_Employer"], ["CreditRating", "prospect_CreditRating"], ["LastName", null], ["FirstName", null], ["MiddleInitial", null], ["Gender", null], ["AddressLine1", null], ["PostalCode", null], ["City", null], ["Phone", null]]}