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   |         NetWorth | AddressLine2   | AddressLine1       | PostalCode   | NumberChildren   | LastName   | Phone          | NumberCreditCards   | Country               | FirstName   | MiddleInitial   | Gender   | City           | State                |   Income |
|:-----------|-----------------:|:---------------|:-------------------|:-------------|:-----------------|:-----------|:---------------|:--------------------|:----------------------|:------------|:----------------|:---------|:---------------|:---------------------|---------:|
| PEL0       | 888270           |                | 21847olympiaq6feet | T6b181       | 4.0              | 0ELLAND    | 1 712 522 6088 |                     | Unjt3dxtatewofAmerica | Negti       |                 | f        | Fairbanks      | MA                   |   368776 |
| LED1       | 850039           | A9T624         | w45cing5esscourt   | 77281        | 4.0              | LErUC      | 1 626 426 4298 | 2.0                 | UnitedSgayesofAnfrica | TRyDY       |                 | F        | Quebec         | PA                   |   177967 |
| lat2       |      1.55628e+06 |                | 6517fraipijgweet   | 91355        | 1.0              | oatif      | 1 524 787 8784 | 2.0                 | UgitedStxtesofAmsriva | irelznd     |                 |          | Henderson      | Alberta              |   321772 |
| RUD3       |      1.75519e+06 |                | 11449blwloxkparu   | 36615        | 1.0              | RUDDICl    | 1 741 997 1688 | 2.0                 | Cabada                | Mistk       |                 |          | Salem          | AR                   |    25449 |
| JAY4       |      1.399e+06   | Apt6w9         | 18364dodddourt     | t5a1i3       | 5.0              | JA5AMANNE  | 1 002 194 1991 | 4.0                 | Canadx                | szrena      | M               | f        | Toledo         | OR                   |   166567 |
| tod5       |      2.18305e+06 |                | 14117roxbor9stre3f | A2b1ve       | 1.0              | todo       | 1 441 371 7651 | 1.0                 | Un85efStatesofAmerida | 0aulette    | Z               | M        | Corpus Christi | VA                   |    43631 |
| Kan6       |      1.48859e+06 |                | 24687FLpREhCEWEST  | 49513        | 2.0              | Kanmo      | 1 957 940 5980 | 0.0                 | Canara                | AMALITq     | R               | m        | Salt Lake City | OH                   |   466230 |
| Din7       |      2.78158e+06 |                | yr88applewooedrive | M5d1g6       | 5.0              | Dknkel     | 1 768 633 4096 | 1.0                 | UnigevxtatesofAmeeica | Ernwsto     | Z               |          | Brownsville    | Prince Edward Island |   420243 |
| Thi8       | 702911           |                | w7404galeco6rt     | V6s1q1       |                  | Thibodezyx | 1 107 689 2155 | 2.0                 | UnitedStateskrzmedica | Toby        |                 |          | Escondido      | NV                   |   141862 |
| May9       | 850946           |                | 25912alexisstreer  | 99716        | 3.0              | Mayo       | 1 173 594 6096 |                     | UnitedStaresibAmegica | wvangelia   |                 |          | Los Angeles    | Ontario              |   402011 |

TableB:
| prospect_gncd   |   prospect_ntwrth | prospect_ddrssln2   | prospect_ddrssln1    | prospect_pstlcd   | prospect_nmbrchldrn   | prospect_lstnm   | prospect_phn   | prospect_nmbrcrdtcrds   | prospect_cntr            | prospect_frstnm   | prospect_nmbrcrs   | prospect_mrtlstts   | prospect_g   | prospect_crdtrtng   | prospect_wnrrntflg   | prospect_mplr            |
|:----------------|------------------:|:--------------------|:---------------------|:------------------|:----------------------|:-----------------|:---------------|:------------------------|:-------------------------|:------------------|:-------------------|:--------------------|:-------------|:--------------------|:---------------------|:-------------------------|
| PEL0            |       1.05887e+06 |                     | 21847 olympia street | T6b 1i1           | 3.0                   | PELLAND          | 1-712-522-6088 |                         | United States of America | Netti             |                    | W                   | 20.0         | 760.0               | O                    | Brink's                  |
| LED1            |       1.98818e+06 | APT. 624            | 245 congress court   | 77281             | 1.0                   | LEDUC            | 1-626-426-4298 | 6.0                     | United States of America | TRUDY             | 5.0                | U                   | 3.0          | 555.0               | U                    |                          |
| lat2            |       3.67313e+06 |                     | 6517 frailing west   | 91355             | 1.0                   | latif            | 1-524-787-8784 | 6.0                     | United States of America | ireland           | 2.0                | S                   |              | 566.0               | O                    |                          |
| RUD3            |       2.0059e+06  |                     | 11449 blalock park   | 36615             | 1.0                   | RUDDICK          | 1-741-997-1688 | 3.0                     | Canada                   | Misti             | 2.0                | W                   | 77.0         |                     | O                    | Air Products & Chemicals |
| JAY4            |  624736           | Apt. 619            | 18354 dodd court     | t6a 1i3           | 3.0                   | JAYAMANNE        | 1-002-194-1991 | 4.0                     | Canada                   | sarena            | 0.0                | M                   | 21.0         | 815.0               | O                    | Oshkosh                  |
| tod5            |       3.06462e+06 |                     | 14117 roxboro street | A2b 1v3           | 4.0                   | todo             | 1-441-371-7651 | 10.0                    | United States of America | Paulette          | 1.0                | M                   | 77.0         | 333.0               | R                    |                          |
| Kan6            |       3.48913e+06 |                     | 24697 FLORENCE WEST  | 49513             | 0.0                   | Kanno            | 1-957-940-5980 | 1.0                     | Canada                   | AMALITA           | 4.0                |                     | 23.0         | 528.0               | O                    | VeraSun Energy           |
| Din7            |       3.43074e+06 |                     | 6488 applewood drive | M5d 1v6           | 2.0                   | Dinkel           | 1-768-633-4096 | 7.0                     | United States of America | Ernesto           | 2.0                | M                   | 9.0          | 680.0               | U                    | IDT                      |
| Thi8            |       1.74361e+06 |                     | 17404 gale court     | V6c 1q1           |                       | Thibodeaux       | 1-107-689-2155 | 10.0                    | United States of America | Toby              | 3.0                | U                   | 63.0         | 761.0               | O                    | Adams Resources & Energy |
| May9            |  216299           |                     | 15913 alexis street  | 99716             | 2.0                   | Mayo             | 1-173-594-6096 |                         | United States of America | evangelia         | 0.0                | M                   | 32.0         | 416.0               | O                    | MGIC Investment          |



source_headers: AgencyID
NetWorth
AddressLine2
AddressLine1
PostalCode
NumberChildren
LastName
Phone
NumberCreditCards
Country
FirstName
target_headers: prospect_gncd
prospect_ntwrth
prospect_ddrssln2
prospect_ddrssln1
prospect_pstlcd
prospect_nmbrchldrn
prospect_lstnm
prospect_phn
prospect_nmbrcrdtcrds
prospect_cntr
prospect_frstnm
column_mappings: AgencyID
prospect_gncd
NetWorth
prospect_ntwrth
AddressLine2
prospect_ddrssln2
AddressLine1
prospect_ddrssln1
PostalCode
prospect_pstlcd
NumberChildren
prospect_nmbrchldrn
LastName
prospect_lstnm
Phone
prospect_phn
NumberCreditCards
prospect_nmbrcrdtcrds
Country
prospect_cntr
FirstName
prospect_frstnm
output: {"column_mappings": [["AgencyID", "prospect_gncd"], ["NetWorth", "prospect_ntwrth"], ["AddressLine2", "prospect_ddrssln2"], ["AddressLine1", "prospect_ddrssln1"], ["PostalCode", "prospect_pstlcd"], ["NumberChildren", "prospect_nmbrchldrn"], ["LastName", "prospect_lstnm"], ["Phone", "prospect_phn"], ["NumberCreditCards", "prospect_nmbrcrdtcrds"], ["Country", "prospect_cntr"], ["FirstName", "prospect_frstnm"], ["MiddleInitial", null], ["Gender", null], ["City", null], ["State", null], ["Income", null]]}