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:
|   DTM Round | State   | State_Pcode   | LGA             | LGA Pcode   | Ward                | Ward Pcode   | SiteID   | Site Name          |   Longitude |   Latitude |   Number of Households |   Number of Individuals |
|------------:|:--------|:--------------|:----------------|:------------|:--------------------|:-------------|:---------|:-------------------|------------:|-----------:|-----------------------:|------------------------:|
|          26 | BORNO   | NG008         | KAGA            | NG008014    | BENISHEIKH          | NG008014002  | BO_S101  | MAGISTRATE         |     12.4984 |    11.8079 |                    474 |                    4674 |
|          26 | BORNO   | NG008         | JERE            | NG008013    | GONGULONG           | NG008013005  | BO_S212  | KESSA KURA         |     13.192  |    11.9181 |                    535 |                    2704 |
|          26 | BORNO   | NG008         | JERE            | NG008013    | DUSUMAN             | NG008013004  | BO_S229  | BOLORIN BURIN      |     13.2325 |    11.8657 |                     88 |                     414 |
|          26 | BORNO   | NG008         | DAMBOA          | NG008007    | DAMBOA              | NG008007005  | BO_S223  | POLICE BARRACK     |     12.7612 |    11.1612 |                     26 |                     105 |
|          26 | BORNO   | NG008         | JERE            | NG008013    | BALE GALTIMARI      | NG008013002  | BO_S301  | AJAJARI CAMP       |     13.1818 |    11.7959 |                     11 |                      63 |
|          26 | BORNO   | NG008         | JERE            | NG008013    | NGUDAA/ADDAMARI     | NG008013008  | BO_S179  | NGUD/ KHADDAMARI   |     13.2221 |    11.949  |                     40 |                     153 |
|          26 | BORNO   | NG008         | MONGUNO         | NG008024    | MONGUNO             | NG008024007  | BO_S177  | VERTINARY          |     13.607  |    12.67   |                   1629 |                    9208 |
|          26 | BORNO   | NG008         | MAIDUGURI M. C. | NG008021    | LAMISULA/JABBA MARI | NG008021010  | BO_S286  | PAMPAS STREET CAMP |     13.1553 |    11.8613 |                     56 |                     311 |
|          26 | BORNO   | NG008         | MAIDUGURI M. C. | NG008021    | BOLORI  I           | NG008021001  | BO_S307  | ALI CROSS HOUSE 1  |     13.1095 |    11.8871 |                     13 |                      57 |
|          26 | BORNO   | NG008         | MONGUNO         | NG008024    | MONGUNO             | NG008024007  | BO_S099  | NRC 1 & 2          |     13.6241 |    12.6662 |                    519 |                    4112 |



source_headers: Round
State of Displacement
State Pcode
LGA
LGA Pcode
Ward
CODs PCODE
Estimated Household Number
Estimated Number of IDP
target_headers: DTM Round
State
State_Pcode
LGA
LGA Pcode
Ward
Ward Pcode
Number of Households
Number of Individuals
column_mappings: Round
DTM Round
State of Displacement
State
State Pcode
State_Pcode
LGA
LGA
LGA Pcode
LGA Pcode
Ward
Ward
CODs PCODE
Ward Pcode
Estimated Household Number
Number of Households
Estimated Number of IDP
Number of Individuals
output: {"column_mappings": [["Reported_Date", null], ["Country", null], ["Country_Code", null], ["Round", "DTM Round"], ["State of Displacement", "State"], ["State Pcode", "State_Pcode"], ["LGA", "LGA"], ["LGA Pcode", "LGA Pcode"], ["Ward", "Ward"], ["CODs PCODE", "Ward Pcode"], ["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]]}