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   | Date of Assessment   | State Code   | State    | LGA Code   | LGA             |   Number households |   Number individuals |
|:----------|:---------------|:----------------|:---------------------|:-------------|:---------|:-----------|:----------------|--------------------:|---------------------:|
| Nigeria   | NGA            | Jan-31-2022     | 2021-11-30 00:00:00  | NGA036       | Yobe     | NGA036003  | Damaturu        |                  79 |                  474 |
| Nigeria   | NGA            | Jan-31-2022     | 2021-10-05 00:00:00  | NGA036       | Yobe     | NGA036017  | Yusufari        |                  35 |                  152 |
| Nigeria   | NGA            | Jan-31-2022     | 2021-11-24 00:00:00  | NGA036       | Yobe     | NGA036005  | Fune            |                  22 |                  121 |
| Nigeria   | NGA            | Jan-31-2022     | 2021-11-26 00:00:00  | NGA008       | Borno    | NGA008013  | Jere            |                 346 |                 2014 |
| Nigeria   | NGA            | Jan-31-2022     | 2022-01-05 00:00:00  | NGA008       | Borno    | NGA008008  | Dikwa           |                 542 |                 2926 |
| Nigeria   | NGA            | Jan-31-2022     | 2021-09-22 00:00:00  | NGA035       | Taraba   | NGA035014  | Wukari          |                  82 |                  495 |
| Nigeria   | NGA            | Jan-31-2022     | 2021-09-19 00:00:00  | NGA035       | Taraba   | NGA035014  | Wukari          |                 113 |                  564 |
| Nigeria   | NGA            | Jan-31-2022     | 2021-12-03 00:00:00  | NGA002       | Adamawa  | NGA002009  | Lamurde         |                  25 |                  150 |
| Nigeria   | NGA            | Jan-31-2022     | 2021-11-25 00:00:00  | NGA016       | Gombe    | NGA016001  | Akko            |                  57 |                  351 |
| Nigeria   | NGA            | Jan-31-2022     | 2021-12-08 00:00:00  | NGA008       | Borno    | NGA008021  | Maiduguri M. C. |                  31 |                  172 |

TableB:
| Country   | Country_Code   | Reported_Date   | Date of Assessment   | State    | State Code   | LGA             | LGA Code   |   Number households |   Number individuals |
|:----------|:---------------|:----------------|:---------------------|:---------|:-------------|:----------------|:-----------|--------------------:|---------------------:|
| Nigeria   | NGA            | Jan-31-2022     | 2021-12-12 00:00:00  | Borno    | NGA008       | Jere            | NGA008013  |                  82 |                  522 |
| Nigeria   | NGA            | Jan-31-2022     | 2021-12-22 00:00:00  | Taraba   | NGA035       | Wukari          | NGA035014  |                  47 |                  256 |
| Nigeria   | NGA            | Jan-31-2022     | 2021-12-12 00:00:00  | Borno    | NGA008       | Konduga         | NGA008016  |                 548 |                 1905 |
| Nigeria   | NGA            | Jan-31-2022     | 2021-11-27 00:00:00  | Borno    | NGA008       | Jere            | NGA008013  |                  39 |                  271 |
| Nigeria   | NGA            | Jan-31-2022     | 2021-12-04 00:00:00  | Borno    | NGA008       | Damboa          | NGA008007  |                 161 |                  622 |
| Nigeria   | NGA            | Jan-31-2022     | 2021-12-26 00:00:00  | Borno    | NGA008       | Maiduguri M. C. | NGA008021  |                 137 |                  884 |
| Nigeria   | NGA            | Jan-31-2022     | 2021-12-13 00:00:00  | Borno    | NGA008       | Maiduguri M. C. | NGA008021  |                  31 |                  214 |
| Nigeria   | NGA            | Jan-31-2022     | 2021-11-30 00:00:00  | Borno    | NGA008       | Gwoza           | NGA008011  |                2068 |                10251 |
| Nigeria   | NGA            | Jan-31-2022     | 2021-12-19 00:00:00  | Borno    | NGA008       | Maiduguri M. C. | NGA008021  |                  49 |                  220 |
| Nigeria   | NGA            | Jan-31-2022     | 2021-12-01 00:00:00  | Borno    | NGA008       | Gwoza           | NGA008011  |                1193 |                 6354 |



source_headers: Country
Country_Code
Reported_Date
Date of Assessment
State Code
State 
LGA Code
LGA 
Number households
Number individuals
target_headers: Country
Country_Code
Reported_Date
Date of Assessment
State Code
State 
LGA Code
LGA 
Number households
Number individuals
column_mappings: Country
Country
Country_Code
Country_Code
Reported_Date
Reported_Date
Date of Assessment
Date of Assessment
State Code
State Code
State 
State 
LGA Code
LGA Code
LGA 
LGA 
Number households
Number households
Number individuals
Number individuals
output: {"column_mappings": [["Country", "Country"], ["Country_Code", "Country_Code"], ["Reported_Date", "Reported_Date"], ["Date of Assessment", "Date of Assessment"], ["State Code", "State Code"], ["State ", "State "], ["LGA Code", "LGA Code"], ["LGA ", "LGA "], ["Number households", "Number households"], ["Number individuals", "Number individuals"]]}