Task: Schema-Matching (source dataset: HXD)

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:
| Country   | Country Code   | Reported Date   | Site Location (State)   | State Code   | Site Location (LGA)   | LGA Code   |   Number of Households |   Number of Individuals |
|:----------|:---------------|:----------------|:------------------------|:-------------|:----------------------|:-----------|-----------------------:|------------------------:|
| Nigeria   | NGA            | Dec-31-2021     | KADUNA                  | NGA019       | ZANGON KATAF          | NGA019022  |                     13 |                      91 |
| Nigeria   | NGA            | Dec-31-2021     | ZAMFARA                 | NGA037       | BUKKUYUM              | NGA037004  |                      8 |                      66 |
| Nigeria   | NGA            | Dec-31-2021     | KADUNA                  | NGA019       | SOBA                  | NGA019021  |                     11 |                      45 |
| Nigeria   | NGA            | Dec-31-2021     | KATSINA                 | NGA021       | FUNTUA                | NGA021014  |                    192 |                    1883 |
| Nigeria   | NGA            | Dec-31-2021     | KANO                    | NGA020       | FAGGE                 | NGA020012  |                      3 |                      10 |
| Nigeria   | NGA            | Dec-31-2021     | NASARAWA                | NGA026       | WAMBA                 | NGA026013  |                     15 |                      71 |
| Nigeria   | NGA            | Dec-31-2021     | KANO                    | NGA020       | DANBATA               | NGA020008  |                     12 |                      70 |
| Nigeria   | NGA            | Dec-31-2021     | KANO                    | NGA020       | NASARAWA              | NGA020031  |                     86 |                     440 |
| Nigeria   | NGA            | Dec-31-2021     | SOKOTO                  | NGA034       | SILAME                | NGA034015  |                     33 |                     141 |
| Nigeria   | NGA            | Dec-31-2021     | KADUNA                  | NGA019       | KADUNA NORTH          | NGA019009  |                     15 |                      64 |

TableB:
| Country   | Country Code   | Reported Date   | Site Location (State)   | State Code   | Site Location (LGA)   | LGA Code   |   Number of Households |   Number of Individuals |
|:----------|:---------------|:----------------|:------------------------|:-------------|:----------------------|:-----------|-----------------------:|------------------------:|
| Nigeria   | NGA            | Dec-31-2021     | ZAMFARA                 | NGA037       | KAURA NAMODA          | NGA037008  |                     40 |                     158 |
| Nigeria   | NGA            | Dec-31-2021     | ZAMFARA                 | NGA037       | GUMMI                 | NGA037006  |                    164 |                     849 |
| Nigeria   | NGA            | Dec-31-2021     | KANO                    | NGA020       | MINJIBIR              | NGA020030  |                      3 |                      14 |
| Nigeria   | NGA            | Dec-31-2021     | SOKOTO                  | NGA034       | WAMAKKO               | NGA034021  |                    100 |                     378 |
| Nigeria   | NGA            | Dec-31-2021     | ZAMFARA                 | NGA037       | TSAFE                 | NGA037013  |                     20 |                     103 |
| Nigeria   | NGA            | Dec-31-2021     | BENUE                   | NGA007       | GUMA                  | NGA007006  |                    213 |                    1749 |
| Nigeria   | NGA            | Dec-31-2021     | KADUNA                  | NGA019       | JEMA'A                | NGA019007  |                     35 |                     194 |
| Nigeria   | NGA            | Dec-31-2021     | KATSINA                 | NGA021       | ZANGO                 | NGA021034  |                     47 |                     341 |
| Nigeria   | NGA            | Dec-31-2021     | BENUE                   | NGA007       | LOGO                  | NGA007012  |                    110 |                     706 |
| Nigeria   | NGA            | Dec-31-2021     | PLATEAU                 | NGA032       | KANKE                 | NGA032008  |                     27 |                     271 |



source_headers: Country
Country Code
Reported Date
Site Location (State)
State Code
Site Location (LGA)
LGA Code
Number of Households
Number of Individuals
target_headers: Country
Country Code
Reported Date
Site Location (State)
State Code
Site Location (LGA)
LGA Code
Number of Households
Number of Individuals
column_mappings: Country
Country
Country Code
Country Code
Reported Date
Reported Date
Site Location (State)
Site Location (State)
State Code
State Code
Site Location (LGA)
Site Location (LGA)
LGA Code
LGA Code
Number of Households
Number of Households
Number of Individuals
Number of Individuals
output: {"column_mappings": [["Country", "Country"], ["Country Code", "Country Code"], ["Reported Date", "Reported Date"], ["Site Location (State)", "Site Location (State)"], ["State Code", "State Code"], ["Site Location (LGA)", "Site Location (LGA)"], ["LGA Code", "LGA Code"], ["Number of Households", "Number of Households"], ["Number of Individuals", "Number of Individuals"]]}