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:
| Report_Date   | Country   | Country_Code   | State_Pcode   | State   | LGA Pcode   | LGA          |   Number of Households |   Number of Individuals |
|:--------------|:----------|:---------------|:--------------|:--------|:------------|:-------------|-----------------------:|------------------------:|
| Oct-31-2019   | Nigeria   | NGA            | NG020         | KANO    | NG020038    | TARAUNI      |                      8 |                      43 |
| Oct-31-2019   | Nigeria   | NGA            | NG007         | BENUE   | NG007013    | MAKURDI      |                     68 |                     481 |
| Oct-31-2019   | Nigeria   | NGA            | NG021         | KATSINA | NG021016    | JIBIA        |                      6 |                      40 |
| Oct-31-2019   | Nigeria   | NGA            | NG034         | SOKOTO  | NG034005    | GORONYO      |                   1372 |                    6142 |
| Oct-31-2019   | Nigeria   | NGA            | NG034         | SOKOTO  | NG034020    | TURETA       |                    385 |                    1345 |
| Oct-31-2019   | Nigeria   | NGA            | NG021         | KATSINA | NG021024    | MAI'ADUA     |                     25 |                     137 |
| Oct-31-2019   | Nigeria   | NGA            | NG034         | SOKOTO  | NG034005    | GORONYO      |                     58 |                     246 |
| Oct-31-2019   | Nigeria   | NGA            | NG007         | BENUE   | NG007006    | GUMA         |                    896 |                    5373 |
| Oct-31-2019   | Nigeria   | NGA            | NG007         | BENUE   | NG007006    | GUMA         |                   1019 |                    6114 |
| Oct-31-2019   | Nigeria   | NGA            | NG032         | PLATEAU | NG032001    | BARIKIN LADI |                    250 |                     600 |



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
Report_Date
State
State_Pcode
LGA
LGA Pcode
Number of Households
Number of Individuals
column_mappings: Country
Country
Country Code
Country_Code
Reported Date
Report_Date
Site Location (State)
State
State Code
State_Pcode
Site Location (LGA)
LGA
LGA Code
LGA Pcode
Number of Households
Number of Households
Number of Individuals
Number of Individuals
output: {"column_mappings": [["Country", "Country"], ["Country Code", "Country_Code"], ["Reported Date", "Report_Date"], ["Site Location (State)", "State"], ["State Code", "State_Pcode"], ["Site Location (LGA)", "LGA"], ["LGA Code", "LGA Pcode"], ["Number of Households", "Number of Households"], ["Number of Individuals", "Number of Individuals"]]}