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   | LastName   | FirstName   | MiddleInitial   | Gender   | AddressLine1         | AddressLine2   | PostalCode   | City           | State                | Country                  | Phone          |   Income | NumberCars   | NumberChildren   | MaritalStatus   | Age   | CreditRating   | OwnOrRentFlag   | Employer                 | NumberCreditCards   |         NetWorth |
|:-----------|:-----------|:------------|:----------------|:---------|:---------------------|:---------------|:-------------|:---------------|:---------------------|:-------------------------|:---------------|---------:|:-------------|:-----------------|:----------------|:------|:---------------|:----------------|:-------------------------|:--------------------|-----------------:|
| PEL0       | PELLAND    | Netti       |                 | f        | 21847 olympia street |                | T6b 1i1      | Fairbanks      | MA                   | United States of America | 1-712-522-6088 |   368776 |              | 3.0              | W               | 20.0  | 760.0          | O               | Brink's                  |                     |      1.05887e+06 |
| LED1       | LEDUC      | TRUDY       |                 | F        | 245 congress court   | APT. 624       | 77281        | Quebec         | PA                   | United States of America | 1-626-426-4298 |   177967 | 5.0          | 1.0              | U               | 3.0   | 555.0          | U               |                          | 6.0                 |      1.98818e+06 |
| lat2       | latif      | ireland     |                 |          | 6517 frailing west   |                | 91355        | Henderson      | Alberta              | United States of America | 1-524-787-8784 |   321772 | 2.0          | 1.0              | S               |       | 566.0          | O               |                          | 6.0                 |      3.67313e+06 |
| RUD3       | RUDDICK    | Misti       |                 |          | 11449 blalock park   |                | 36615        | Salem          | AR                   | Canada                   | 1-741-997-1688 |    25449 | 2.0          | 1.0              | W               | 77.0  |                | O               | Air Products & Chemicals | 3.0                 |      2.0059e+06  |
| JAY4       | JAYAMANNE  | sarena      | M               | f        | 18354 dodd court     | Apt. 619       | t6a 1i3      | Toledo         | OR                   | Canada                   | 1-002-194-1991 |   166567 | 0.0          | 3.0              | M               | 21.0  | 815.0          | O               | Oshkosh                  | 4.0                 | 624736           |
| tod5       | todo       | Paulette    | Z               | M        | 14117 roxboro street |                | A2b 1v3      | Corpus Christi | VA                   | United States of America | 1-441-371-7651 |    43631 | 1.0          | 4.0              | M               | 77.0  | 333.0          | R               |                          | 10.0                |      3.06462e+06 |
| Kan6       | Kanno      | AMALITA     | R               | m        | 24697 FLORENCE WEST  |                | 49513        | Salt Lake City | OH                   | Canada                   | 1-957-940-5980 |   466230 | 4.0          | 0.0              |                 | 23.0  | 528.0          | O               | VeraSun Energy           | 1.0                 |      3.48913e+06 |
| Din7       | Dinkel     | Ernesto     | Z               |          | 6488 applewood drive |                | M5d 1v6      | Brownsville    | Prince Edward Island | United States of America | 1-768-633-4096 |   420243 | 2.0          | 2.0              | M               | 9.0   | 680.0          | U               | IDT                      | 7.0                 |      3.43074e+06 |
| Thi8       | Thibodeaux | Toby        |                 |          | 17404 gale court     |                | V6c 1q1      | Escondido      | NV                   | United States of America | 1-107-689-2155 |   141862 | 3.0          |                  | U               | 63.0  | 761.0          | O               | Adams Resources & Energy | 10.0                |      1.74361e+06 |
| May9       | Mayo       | evangelia   |                 |          | 15913 alexis street  |                | 99716        | Los Angeles    | Ontario              | United States of America | 1-173-594-6096 |   402011 | 0.0          | 2.0              | M               | 32.0  | 416.0          | O               | MGIC Investment          |                     | 216299           |

TableB:
| gncd    | lstnm                         | frstnm                      | mddlntl   | gndr   | ddrssln1                                                                    | ddrssln2                                                          | pstlcd       | ct         | stt   | cntr                     | phn            |    ncm |   nmbrcrs | nmbrchldrn   | mrtlstts   |   g |   crdtrtng | wnrrntflg   | mplr                           | nmbrcrdtcrds   |           ntwrth |
|:--------|:------------------------------|:----------------------------|:----------|:-------|:----------------------------------------------------------------------------|:------------------------------------------------------------------|:-------------|:-----------|:------|:-------------------------|:---------------|-------:|----------:|:-------------|:-----------|----:|-----------:|:------------|:-------------------------------|:---------------|-----------------:|
| Iok7501 | Iokwiqojocjanndatkdzgymym     | wbwsqgtaa                   | n         |        | jsurlejkapodmkaccruslfkcqmbcquahsyweopxdxknl                                | GKOIKEZZMQTPQUQZLSAUUMVBDPAXTWNWSXTYJYQ                           | Guudshirvcu  | Baltimore  | MO    | United States of America | 1-637-119-9996 |  94490 |         3 |              | U          |   7 |        580 | U           | FM Global                      |                | 321776           |
| tia7502 | tiabxgseasiibxakctfzhfwotp    | QGJWCPAPZMWHYHZTNOYSSOQBI   |           | M      | Ggptcoorkpeeigqzevhwhjdxdfbrmidyxsugikhgmuvvpcptuphjlgmipvhrrsgepibdupa     | ocmgcvnexhqhgoyrwpkgaopthdvandlzaaleqccjpjkbirtcqvorobgskhtlgndvn | wyggjewbe    | Kitchener  | TX    | Canada                   | 1-560-405-0048 |   7037 |         4 | 4.0          | S          |  48 |        683 | R           | MGIC Investment                | 2.0            |      2.29232e+06 |
| AOI7503 | AOIWIWTIHIXOJ                 | BHGXDDPUMBESLQMNEPREPTZNNKM | u         |        | Gpcvjzlwouagawronludakqiuhbrbpbkkltrnlkoezgwcawpayfsnejpkmisnryphbtztbfemoy | Cdrxeolwrrxmwmhgexvcstvzz                                         | YMZRQICUTHT  | Saint John | CT    |                          | 1-261-306-5079 | 419269 |         1 | 5.0          | M          |  14 |        411 | O           | Ross Stores                    | 2.0            | 969707           |
| PJQ7504 | PJQSPMBUHYQKBOZ               | Xgnvppcxgfnmawlupgfa        |           | m      | Yxkhkvrobywpdczvwmjgxvnuduavcpyiuceglhaskahgyxqpqjbdroyojouqkzfwvfpsddisy   | WKSBVOFGJHQGAEKUYRZHHPH                                           | Bcjuycmcen   | Berkeley   | UT    | United States of America | 1-642-299-6655 |  76681 |         4 | 5.0          | W          |  29 |        818 | U           |                                | 9.0            |      3.89946e+06 |
| SDV7505 | SDVLJWXENNGWCQMIW             | Tfiozpstcftslqtwkgngiiwo    |           |        | Ddsarhvraiskwmrddncqwvzkmjmxtgnpbtgyop                                      | skxijfqpzshmts                                                    | Nujxguyehf   | Missoula   | RI    | United States of America |                | 209116 |         2 | 4.0          | U          |  69 |        370 | R           | Alliance One International     | 7.0            |      3.74922e+06 |
| Hga7506 | Hgakmykzeunwkiaxayulpwyxrcuev | fbcahlrhhjoslfzqvvwwvhk     | F         | F      | Ajpkrmtlcbdzr                                                               | ZETOHHRKIBHCQCKZODIXJJSXCFY                                       | Neigswk      | Salinas    | DE    |                          | 1-388-257-4273 | 212203 |         0 | 0.0          | U          |  47 |        833 | O           | Sally Beauty Holdings          | 6.0            |      3.65853e+06 |
| Beo7507 | Beotomyndkiqryllkvpavllytov   | Dcgkohfcwyoaxckalqnkrzwq    | D         | M      | PKSTPUXQIRGWSXSKWRAJTTNBAOLQKAAJFAPGWIHBWVCHOXLE                            | LJXAXKUJXQBGWBHJJAAM                                              | WNCEOQPLW    | San Jose   | NM    | Canada                   |                |  42018 |         5 | 5.0          | M          |   0 |        536 | U           | Wisconsin Energy               | 2.0            |      1.73846e+06 |
| Qum7508 | Qumxrssnd                     | Vmnmcsinflxxmmifydckncc     |           |        | gyhrpdbplficrfirmtavitgpfmhnnhvsuoqwxrulxlqrdqkzshqovucentrxlakgkpwbrgtd    | Jmlgjkjbqhrudrkqrm                                                | Cskdwtkf     | Cleveland  | WV    | United States of America | 1-632-118-1891 |  90446 |         0 | 0.0          | S          |  46 |        775 | R           | Carpenter Technology           | 0.0            |      3.3073e+06  |
| Hud7509 | Hudlpfwjagzbnznyhamjkhbf      | Vrkbkkxkddtximspigmlbwzt    | v         |        | GJTWIDOQOAPDVVULJGOOJBWTTANDJXOCQHWWZAGLGMJQXJOMWFTFVGXIH                   | Qqcilgblxyikgr                                                    | tcxswloetdt  | Huntington | NH    | United States of America | 1-853-806-4986 |  16274 |         1 | 1.0          | M          |   6 |        765 | R           | Liberty Mutual Insurance Group | 3.0            |      1.81642e+06 |
| jba7510 | jbabemsfwdyeihxq              | RMWCTFTLSVTMCBI             |           | m      | Ycltsquohmuugxihqyluhkoy                                                    | Ahtohqjfzfarn                                                     | Fkpemasoukih | Paterson   | WY    | Canada                   | 1-220-687-2027 |  22215 |         5 | 2.0          | M          |  22 |        555 | O           | Black & Decker                 | 6.0            |      2.59925e+06 |



source_headers: AgencyID
LastName
FirstName
MiddleInitial
Gender
AddressLine1
AddressLine2
PostalCode
City
State
Country
Phone
Income
NumberCars
NumberChildren
MaritalStatus
Age
CreditRating
OwnOrRentFlag
Employer
NumberCreditCards
NetWorth
target_headers: gncd
lstnm
frstnm
mddlntl
gndr
ddrssln1
ddrssln2
pstlcd
ct
stt
cntr
phn
ncm
nmbrcrs
nmbrchldrn
mrtlstts
g
crdtrtng
wnrrntflg
mplr
nmbrcrdtcrds
ntwrth
column_mappings: AgencyID
gncd
LastName
lstnm
FirstName
frstnm
MiddleInitial
mddlntl
Gender
gndr
AddressLine1
ddrssln1
AddressLine2
ddrssln2
PostalCode
pstlcd
City
ct
State
stt
Country
cntr
Phone
phn
Income
ncm
NumberCars
nmbrcrs
NumberChildren
nmbrchldrn
MaritalStatus
mrtlstts
Age
g
CreditRating
crdtrtng
OwnOrRentFlag
wnrrntflg
Employer
mplr
NumberCreditCards
nmbrcrdtcrds
NetWorth
ntwrth
output: {"column_mappings": [["AgencyID", "gncd"], ["LastName", "lstnm"], ["FirstName", "frstnm"], ["MiddleInitial", "mddlntl"], ["Gender", "gndr"], ["AddressLine1", "ddrssln1"], ["AddressLine2", "ddrssln2"], ["PostalCode", "pstlcd"], ["City", "ct"], ["State", "stt"], ["Country", "cntr"], ["Phone", "phn"], ["Income", "ncm"], ["NumberCars", "nmbrcrs"], ["NumberChildren", "nmbrchldrn"], ["MaritalStatus", "mrtlstts"], ["Age", "g"], ["CreditRating", "crdtrtng"], ["OwnOrRentFlag", "wnrrntflg"], ["Employer", "mplr"], ["NumberCreditCards", "nmbrcrdtcrds"], ["NetWorth", "ntwrth"]]}