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   | NumberCreditCards   | OwnOrRentFlag   | PostalCode   | MiddleInitial   | NumberCars   | LastName   | FirstName   | Gender   | AddressLine1         | AddressLine2   | City           | State                | Country                  |
|:-----------|:--------------------|:----------------|:-------------|:----------------|:-------------|:-----------|:------------|:---------|:---------------------|:---------------|:---------------|:---------------------|:-------------------------|
| PEL0       |                     | O               | 56b1i1       |                 |              | PELLAND    | Netti       | f        | 21847 olympia street |                | Fairbanks      | MA                   | United States of America |
| LED1       | 6.0                 | U               | 77281        |                 | 1.0          | LEDUC      | TRUDY       | F        | 245 congress court   | APT. 624       | Quebec         | PA                   | United States of America |
| lat2       | 5.0                 | O               | 91355        |                 | 3.0          | latif      | ireland     |          | 6517 frailing west   |                | Henderson      | Alberta              | United States of America |
| RUD3       | 1.0                 | O               | 36615        |                 | 0.0          | RUDDICK    | Misti       |          | 11449 blalock park   |                | Salem          | AR                   | Canada                   |
| JAY4       | 5.0                 | O               | t6a2i3       | M               | 4.0          | JAYAMANNE  | sarena      | f        | 18354 dodd court     | Apt. 619       | Toledo         | OR                   | Canada                   |
| tod5       | 6.0                 | R               | A2b1v4       | Z               | 2.0          | todo       | Paulette    | M        | 14117 roxboro street |                | Corpus Christi | VA                   | United States of America |
| Kan6       | 3.0                 | O               | 49513        | R               | 1.0          | Kanno      | AMALITA     | m        | 24697 FLORENCE WEST  |                | Salt Lake City | OH                   | Canada                   |
| Din7       | 5.0                 | U               | M5c1v6       | Z               | 4.0          | Dinkel     | Ernesto     |          | 6488 applewood drive |                | Brownsville    | Prince Edward Island | United States of America |
| Thi8       | 3.0                 | O               | b6c1q1       |                 | 1.0          | Thibodeaux | Toby        |          | 17404 gale court     |                | Escondido      | NV                   | United States of America |
| May9       |                     | O               | 99716        |                 | 5.0          | Mayo       | evangelia   |          | 15913 alexis street  |                | Los Angeles    | Ontario              | United States of America |

TableB:
| AgeID   | NuCrCa   | OwOReF   | PosCo   | MiInit   | NuC   | Ph             |     In | NumChi   | MariSt   | Ag   | CreRat   | Em                       |             NeWo |
|:--------|:---------|:---------|:--------|:---------|:------|:---------------|-------:|:---------|:---------|:-----|:---------|:-------------------------|-----------------:|
| PEL0    |          | O        | T6b 1i1 |          |       | 1-712-522-6088 | 368776 | 3.0      | W        | 20.0 | 760.0    | Brink's                  |      1.05887e+06 |
| LED1    | 6.0      | U        | 77281   |          | 5.0   | 1-626-426-4298 | 177967 | 1.0      | U        | 3.0  | 555.0    |                          |      1.98818e+06 |
| lat2    | 6.0      | O        | 91355   |          | 2.0   | 1-524-787-8784 | 321772 | 1.0      | S        |      | 566.0    |                          |      3.67313e+06 |
| RUD3    | 3.0      | O        | 36615   |          | 2.0   | 1-741-997-1688 |  25449 | 1.0      | W        | 77.0 |          | Air Products & Chemicals |      2.0059e+06  |
| JAY4    | 4.0      | O        | t6a 1i3 | M        | 0.0   | 1-002-194-1991 | 166567 | 3.0      | M        | 21.0 | 815.0    | Oshkosh                  | 624736           |
| tod5    | 10.0     | R        | A2b 1v3 | Z        | 1.0   | 1-441-371-7651 |  43631 | 4.0      | M        | 77.0 | 333.0    |                          |      3.06462e+06 |
| Kan6    | 1.0      | O        | 49513   | R        | 4.0   | 1-957-940-5980 | 466230 | 0.0      |          | 23.0 | 528.0    | VeraSun Energy           |      3.48913e+06 |
| Din7    | 7.0      | U        | M5d 1v6 | Z        | 2.0   | 1-768-633-4096 | 420243 | 2.0      | M        | 9.0  | 680.0    | IDT                      |      3.43074e+06 |
| Thi8    | 10.0     | O        | V6c 1q1 |          | 3.0   | 1-107-689-2155 | 141862 |          | U        | 63.0 | 761.0    | Adams Resources & Energy |      1.74361e+06 |
| May9    |          | O        | 99716   |          | 0.0   | 1-173-594-6096 | 402011 | 2.0      | M        | 32.0 | 416.0    | MGIC Investment          | 216299           |



source_headers: AgencyID
NumberCreditCards
OwnOrRentFlag
PostalCode
MiddleInitial
NumberCars
target_headers: AgeID
NuCrCa
OwOReF
PosCo
MiInit
NuC
column_mappings: AgencyID
AgeID
NumberCreditCards
NuCrCa
OwnOrRentFlag
OwOReF
PostalCode
PosCo
MiddleInitial
MiInit
NumberCars
NuC
output: {"column_mappings": [["AgencyID", "AgeID"], ["NumberCreditCards", "NuCrCa"], ["OwnOrRentFlag", "OwOReF"], ["PostalCode", "PosCo"], ["MiddleInitial", "MiInit"], ["NumberCars", "NuC"], ["LastName", null], ["FirstName", null], ["Gender", null], ["AddressLine1", null], ["AddressLine2", null], ["City", null], ["State", null], ["Country", null]]}