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:
| Reported_Date   | Country   | Country_Code   | Round   | State of Displacement   | State Pcode   | LGA        | LGA Pcode   | Ward              | CODs PCODE   |   Estimated Household Number |   Estimated Number of IDP |   Year | state_orig   | lga_orig   | reason_insurgency_YesNo   | reason_insurg_hh   | reason_insurg_ind   | reason_clash_YesNo   | reason_clash_hh   | reason_clash_ind   | reason_disaster_YesNo   | reason_disaster_hh   | reason_disaster_ind   | reason_others_YesNo   | reason_others_hh   | reason_others_ind   |
|:----------------|:----------|:---------------|:--------|:------------------------|:--------------|:-----------|:------------|:------------------|:-------------|-----------------------------:|--------------------------:|-------:|:-------------|:-----------|:--------------------------|:-------------------|:--------------------|:---------------------|:------------------|:-------------------|:------------------------|:---------------------|:----------------------|:----------------------|:-------------------|:--------------------|
| Oct-31-2021     | Nigeria   | NGA            | R39     | BORNO                   | NG008         | CHIBOK     | NG008006    | CHIBOK GARU       | NG008006001  |                          577 |                      2891 |   2015 | BORNO        | DAMBOA     | Yes                       | 577                | 2891                | No                   |                   |                    | No                      |                      |                       | No                    |                    |                     |
| Oct-31-2021     | Nigeria   | NGA            | R39     | ADAMAWA                 | NG002         | GOMBI      | NG002004    | GOMBI SOUTH       | NG002005007  |                          147 |                       806 |   2016 | BORNO        | GWOZA      | Yes                       | 147                | 806                 | No                   |                   |                    | No                      |                      |                       | No                    |                    |                     |
| Oct-31-2021     | Nigeria   | NGA            | R39     | BAUCHI                  | NG005         | JAMA'ARE   | NG005011    | DOGON JEJI "A"    | NG005011001  |                           18 |                       125 |   2014 | BORNO        | KUKAWA     | Yes                       | 18                 | 125                 | No                   |                   |                    | No                      |                      |                       | No                    |                    |                     |
| Oct-31-2021     | Nigeria   | NGA            | R39     | BORNO                   | NG008         | JERE       | NG008013    | GOMARI            | NG008013005  |                          989 |                      4713 |   2015 | BORNO        | BAMA       | Yes                       | 989                | 4713                | No                   |                   |                    | No                      |                      |                       | No                    |                    |                     |
| Oct-31-2021     | Nigeria   | NGA            | R39     | TARABA                  | NG035         | JALINGO    | NG035007    | TURAKI 'B'        | NG035007010  |                           97 |                       485 |   2014 | TARABA       | JALINGO    | Yes                       | 36                 | 180                 | Yes                  | 61                | 305                | No                      |                      |                       | No                    |                    |                     |
| Oct-31-2021     | Nigeria   | NGA            | R39     | ADAMAWA                 | NG002         | LAMURDE    | NG002009    | RIGANGE           | NG002009008  |                           24 |                       144 |   2017 | ADAMAWA      | NUMAN      | No                        |                    |                     | Yes                  | 24                | 144                | No                      |                      |                       | No                    |                    |                     |
| Oct-31-2021     | Nigeria   | NGA            | R39     | ADAMAWA                 | NG002         | YOLA NORTH | NG002020    | KARENA            | NG002020006  |                          531 |                      1933 |   2014 | BORNO        | GWOZA      | Yes                       | 517                | 1862                | No                   |                   |                    | Yes                     | 14                   | 71                    | No                    |                    |                     |
| Oct-31-2021     | Nigeria   | NGA            | R39     | YOBE                    | NG036         | TARMUWA    | NG036015    | BIRIRI/CHUROKUSKO | NG036015003  |                            7 |                        38 |   2021 | YOBE         | TARMUWA    | Yes                       | 7                  | 38                  | No                   |                   |                    | No                      |                      |                       | No                    |                    |                     |
| Oct-31-2021     | Nigeria   | NGA            | R39     | BAUCHI                  | NG005         | DAMBAM     | NG005004    | GARGAWA           | NG005004003  |                           48 |                       140 |   2014 | YOBE         | GUJBA      | Yes                       | 48                 | 140                 | No                   |                   |                    | No                      |                      |                       | No                    |                    |                     |
| Oct-31-2021     | Nigeria   | NGA            | R39     | BORNO                   | NG008         | BIU        | NG008005    | GARUBULA          | NG008005004  |                           26 |                       216 |   2016 | BORNO        | DAMBOA     | Yes                       | 26                 | 216                 | No                   |                   |                    | No                      |                      |                       | No                    |                    |                     |

TableB:
| Country   | Country_code   | Reported_date   | Date                | State   | State_Pcode   | LGA             | LGA Pcode   |   Number of Households |   Number of Individuals |
|:----------|:---------------|:----------------|:--------------------|:--------|:--------------|:----------------|:------------|-----------------------:|------------------------:|
| Nigeria   | NGA            | Oct-31-2021     | 2021-10-03 00:00:00 | YOBE    | NG036         | BURSARI         | NG036002    |                     68 |                     205 |
| Nigeria   | NGA            | Oct-31-2021     | 2021-09-07 00:00:00 | BORNO   | NG008         | MAIDUGURI M. C. | NG008021    |                     55 |                     381 |
| Nigeria   | NGA            | Oct-31-2021     | 2021-10-11 00:00:00 | ADAMAWA | NG002         | NUMAN           | NG002016    |                    238 |                    1666 |
| Nigeria   | NGA            | Oct-31-2021     | 2021-10-03 00:00:00 | YOBE    | NG036         | KARASAWA        | NG036010    |                      3 |                       9 |
| Nigeria   | NGA            | Oct-31-2021     | 2021-10-02 00:00:00 | ADAMAWA | NG002         | HONG            | NG002007    |                      4 |                      16 |
| Nigeria   | NGA            | Oct-31-2021     | 2021-09-13 00:00:00 | BAUCHI  | NG005         | SHIRA           | NG005016    |                      3 |                      30 |
| Nigeria   | NGA            | Oct-31-2021     | 2021-10-03 00:00:00 | ADAMAWA | NG002         | GOMBI           | NG002004    |                     21 |                      72 |
| Nigeria   | NGA            | Oct-31-2021     | 2021-10-01 00:00:00 | TARABA  | NG035         | LAU             | NG035010    |                      8 |                      29 |
| Nigeria   | NGA            | Oct-31-2021     | 2021-09-13 00:00:00 | TARABA  | NG035         | IBI             | NG035006    |                     13 |                     160 |
| Nigeria   | NGA            | Oct-31-2021     | 2021-09-07 00:00:00 | TARABA  | NG035         | KARIM-LAMIDO    | NG035008    |                     57 |                     306 |



source_headers: Reported_Date
Country
Country_Code
State of Displacement
State Pcode
LGA
LGA Pcode
Estimated Household Number
Estimated Number of IDP
target_headers: Reported_date
Country
Country_code
State
State_Pcode
LGA
LGA Pcode
Number of Households
Number of Individuals
column_mappings: Reported_Date
Reported_date
Country
Country
Country_Code
Country_code
State of Displacement
State
State Pcode
State_Pcode
LGA
LGA
LGA Pcode
LGA Pcode
Estimated Household Number
Number of Households
Estimated Number of IDP
Number of Individuals
output: {"column_mappings": [["Reported_Date", "Reported_date"], ["Country", "Country"], ["Country_Code", "Country_code"], ["Round", null], ["State of Displacement", "State"], ["State Pcode", "State_Pcode"], ["LGA", "LGA"], ["LGA Pcode", "LGA Pcode"], ["Ward", null], ["CODs PCODE", null], ["Estimated Household Number", "Number of Households"], ["Estimated Number of IDP", "Number of Individuals"], ["Year", null], ["state_orig", null], ["lga_orig", null], ["reason_insurgency_YesNo", null], ["reason_insurg_hh", null], ["reason_insurg_ind", null], ["reason_clash_YesNo", null], ["reason_clash_hh", null], ["reason_clash_ind", null], ["reason_disaster_YesNo", null], ["reason_disaster_hh", null], ["reason_disaster_ind", null], ["reason_others_YesNo", null], ["reason_others_hh", null], ["reason_others_ind", null]]}