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:
| Snapshot date       | Date Occurred       | Country   | Country Code   |   Round | State of Displacement   | State Pcode   | LGA Pcode   | LGA     | CODs PCODE   | Ward            |   Estimated Household Number |   Estimated Number of IDP |   Year | idp_category                  | 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   | IDPs_from LGA_displaced_In Ward_YesNo   | IDP HH_from LGA_displaced_In Ward   | IDP IND_from LGA displaced_In Ward   | StateCode_Previous_State of Displacement   | StateName_Previous_State of Displacement   | LGACode_Previous_State of Displacement of largest group 1   | LGAName_Previous_State of Displacement   | Date of arrival largest IDP group 1   | IDP HH of largest Group 1   | IDP IND of largest Group 1   | StateCode_Previous_displacement of Largest Group 2   | StateName_Previous_displacement of Largest Group 2   | LGACode_Previous_displacement of Largest Group 2   | LGAName_Previous_displacement of Largest Group 2   | Date of arrival largest IDP group 2   | IDPHH of largest Group 2   | IDP IND of largest Group 2   | Displaced_FirstTime_Displacement_YesNo   |   Displaced_FirstTime_Displacement_Percent | Displaced_2TIMES_Displacement_YesNo   | Displaced_2TIMES_Displacement_Percent   | Displaced_2TIMES_Displacement_STATECode   | Displaced_2TIMES_Displacement_LGACode   | Displaced_2TIMES_Displacement_Date   | Displaced_3TIMES_Displacement_YesNo   | Displaced_3TIMES_Displacement_Percent   | Displaced_3TIMES_Displacement_STATECode   | Displaced_3TIMES_Displacement_LGACode   | Displaced_3TIMES_Displacement_Date   | Displaced_3TIMES_More_Displacement_YesNo   | Displaced_3TIMES_More_Displacement__Percent   | Displaced_3TIMES_More_Displacement__STATECode   | Displaced_3TIMES_More_Displacement_LGACode   | Displaced_3TIMES_More_Displacement_Date   |
|:--------------------|:--------------------|:----------|:---------------|--------:|:------------------------|:--------------|:------------|:--------|:-------------|:----------------|-----------------------------:|--------------------------:|-------:|:------------------------------|:-------------|:----------------|:--------------------------|:-------------------|:--------------------|:---------------------|:------------------|:-------------------|:------------------------|:---------------------|:----------------------|:----------------------|:-------------------|:--------------------|:----------------------------------------|:------------------------------------|:-------------------------------------|:-------------------------------------------|:-------------------------------------------|:------------------------------------------------------------|:-----------------------------------------|:--------------------------------------|:----------------------------|:-----------------------------|:-----------------------------------------------------|:-----------------------------------------------------|:---------------------------------------------------|:---------------------------------------------------|:--------------------------------------|:---------------------------|:-----------------------------|:-----------------------------------------|-------------------------------------------:|:--------------------------------------|:----------------------------------------|:------------------------------------------|:----------------------------------------|:-------------------------------------|:--------------------------------------|:----------------------------------------|:------------------------------------------|:----------------------------------------|:-------------------------------------|:-------------------------------------------|:----------------------------------------------|:------------------------------------------------|:---------------------------------------------|:------------------------------------------|
| 2021-05-19 00:00:00 | 2021-02-24 00:00:00 | Nigeria   | NG             |      36 | YOBE                    | NG036         | NG036001    | BADE    | NG036001004  | KATUZU          |                          169 |                      1023 |   2014 | Displaced by Insurgency       | BORNO        | KUKAWA          | Yes                       | 169                | 1023                | No                   |                   |                    | No                      |                      |                       | No                    |                    |                     | No                                      |                                     |                                      |                                            |                                            |                                                             |                                          |                                       |                             |                              |                                                      |                                                      |                                                    |                                                    |                                       |                            |                              | Yes                                      |                                        100 |                                       |                                         |                                           |                                         |                                      |                                       |                                         |                                           |                                         |                                      |                                            |                                               |                                                 |                                              |                                           |
| 2021-05-19 00:00:00 | 2021-02-24 00:00:00 | Nigeria   | NG             |      36 | ADAMAWA                 | NG002         | NG002009    | LAMURDE | NG002009006  | NGBAKOWO        |                           53 |                       318 |   2014 | Displaced by Communal Clashes | ADAMAWA      | LAMURDE         | Yes                       | 5                  | 30                  | Yes                  | 26                | 156                | Yes                     | 22                   | 132                   | No                    |                    |                     | No                                      |                                     |                                      |                                            |                                            |                                                             |                                          |                                       |                             |                              |                                                      |                                                      |                                                    |                                                    |                                       |                            |                              | Yes                                      |                                        100 |                                       |                                         |                                           |                                         |                                      |                                       |                                         |                                           |                                         |                                      |                                            |                                               |                                                 |                                              |                                           |
| 2021-05-19 00:00:00 | 2021-02-24 00:00:00 | Nigeria   | NG             |      36 | BAUCHI                  | NG005         | NG005012    | KATAGUM | NG005012002  | BUSKURI         |                           31 |                       183 |   2014 | Displaced by Insurgency       | BORNO        | JERE            | Yes                       | 31                 | 183                 | No                   |                   |                    | No                      |                      |                       | No                    |                    |                     | No                                      |                                     |                                      |                                            |                                            |                                                             |                                          |                                       |                             |                              |                                                      |                                                      |                                                    |                                                    |                                       |                            |                              | Yes                                      |                                        100 |                                       |                                         |                                           |                                         |                                      |                                       |                                         |                                           |                                         |                                      |                                            |                                               |                                                 |                                              |                                           |
| 2021-05-19 00:00:00 | 2021-02-24 00:00:00 | Nigeria   | NG             |      36 | YOBE                    | NG036         | NG036002    | BURSARI | NG036002003  | DAPCHI          |                          291 |                      1771 |   2014 | Displaced by Insurgency       | YOBE         | TARMUWA         | Yes                       | 122                | 947                 | No                   |                   |                    | Yes                     | 169                  | 824                   | No                    |                    |                     | No                                      |                                     |                                      |                                            |                                            |                                                             |                                          |                                       |                             |                              |                                                      |                                                      |                                                    |                                                    |                                       |                            |                              | Yes                                      |                                         72 | Yes                                   | 18                                      | YB                                        | YB01                                    | 2)2015                               | Yes                                   | 10                                      | YB                                        | YB15                                    | 6)2019                               | No                                         |                                               |                                                 |                                              |                                           |
| 2021-05-19 00:00:00 | 2021-02-24 00:00:00 | Nigeria   | NG             |      36 | YOBE                    | NG036         | NG036006    | GEIDAM  | NG036006011  | MA'ANNA/DAGAMBI |                           74 |                       481 |   2014 | Displaced by Insurgency       | YOBE         | GEIDAM          | Yes                       | 74                 | 481                 | No                   |                   |                    | No                      |                      |                       | No                    |                    |                     | Yes                                     | 74                                  | 481                                  | YB                                         | YOBE                                       | YB06                                                        | GEIDAM                                   | 2014-12-01 00:00:00                   |                             |                              |                                                      |                                                      |                                                    |                                                    |                                       |                            |                              | Yes                                      |                                        100 |                                       |                                         |                                           |                                         |                                      |                                       |                                         |                                           |                                         |                                      |                                            |                                               |                                                 |                                              |                                           |
| 2021-05-19 00:00:00 | 2021-02-24 00:00:00 | Nigeria   | NG             |      36 | ADAMAWA                 | NG002         | NG002009    | LAMURDE | NG002009010  | WADUKU          |                           34 |                       204 |   2017 | Displaced by Communal Clashes | ADAMAWA      | NUMAN           | No                        |                    |                     | Yes                  | 34                | 204                | No                      |                      |                       | No                    |                    |                     | Yes                                     | 34                                  | 204                                  | AD                                         | ADAMAWA                                    | AD09                                                        | LAMURDE                                  | 2019-09-01 00:00:00                   |                             |                              |                                                      |                                                      |                                                    |                                                    |                                       |                            |                              | Yes                                      |                                        100 |                                       |                                         |                                           |                                         |                                      |                                       |                                         |                                           |                                         |                                      |                                            |                                               |                                                 |                                              |                                           |
| 2021-05-19 00:00:00 | 2021-02-24 00:00:00 | Nigeria   | NG             |      36 | GOMBE                   | NG016         | NG016002    | BALANGA | NG016002002  | BANGU           |                           24 |                       145 |   2014 | Displaced by Insurgency       | BORNO        | MAFA            | Yes                       | 10                 | 65                  | Yes                  | 14                | 80                 | No                      |                      |                       | No                    |                    |                     | No                                      |                                     |                                      |                                            |                                            |                                                             |                                          |                                       |                             |                              |                                                      |                                                      |                                                    |                                                    |                                       |                            |                              | Yes                                      |                                        100 |                                       |                                         |                                           |                                         |                                      |                                       |                                         |                                           |                                         |                                      |                                            |                                               |                                                 |                                              |                                           |
| 2021-05-19 00:00:00 | 2021-02-24 00:00:00 | Nigeria   | NG             |      36 | BAUCHI                  | NG005         | NG005006    | DASS    | NG005006005  | BUNUNU SOUTH    |                           67 |                       476 |   2014 | Displaced by Communal Clashes | NASARAWA     | LAFIA           | Yes                       | 16                 | 143                 | Yes                  | 51                | 333                | No                      |                      |                       | No                    |                    |                     | No                                      |                                     |                                      |                                            |                                            |                                                             |                                          |                                       |                             |                              |                                                      |                                                      |                                                    |                                                    |                                       |                            |                              | Yes                                      |                                        100 |                                       |                                         |                                           |                                         |                                      |                                       |                                         |                                           |                                         |                                      |                                            |                                               |                                                 |                                              |                                           |
| 2021-05-19 00:00:00 | 2021-02-24 00:00:00 | Nigeria   | NG             |      36 | GOMBE                   | NG016         | NG016003    | BILLIRI | NG016003009  | TODI            |                            7 |                        52 |   2015 | Displaced by Insurgency       | BORNO        | MAIDUGURI M. C. | Yes                       | 7                  | 52                  | No                   |                   |                    | No                      |                      |                       | No                    |                    |                     | No                                      |                                     |                                      |                                            |                                            |                                                             |                                          |                                       |                             |                              |                                                      |                                                      |                                                    |                                                    |                                       |                            |                              | Yes                                      |                                        100 |                                       |                                         |                                           |                                         |                                      |                                       |                                         |                                           |                                         |                                      |                                            |                                               |                                                 |                                              |                                           |
| 2021-05-19 00:00:00 | 2021-02-24 00:00:00 | Nigeria   | NG             |      36 | ADAMAWA                 | NG002         | NG002007    | HONG    | NG002007007  | HUSHERE ZUM     |                           12 |                        64 |   2016 | Displaced by Insurgency       | BORNO        | GWOZA           | Yes                       | 12                 | 64                  | No                   |                   |                    | No                      |                      |                       | No                    |                    |                     | No                                      |                                     |                                      |                                            |                                            |                                                             |                                          |                                       |                             |                              |                                                      |                                                      |                                                    |                                                    |                                       |                            |                              | Yes                                      |                                        100 |                                       |                                         |                                           |                                         |                                      |                                       |                                         |                                           |                                         |                                      |                                            |                                               |                                                 |                                              |                                           |

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: Snapshot date
Date Occurred
Country
Country Code
State of Displacement
State Pcode
LGA Pcode
LGA
Estimated Household Number
Estimated Number of IDP
target_headers: Reported_date
Date
Country
Country_code
State
State_Pcode
LGA Pcode
LGA
Number of Households
Number of Individuals
column_mappings: Snapshot date
Reported_date
Date Occurred
Date
Country
Country
Country Code
Country_code
State of Displacement
State
State Pcode
State_Pcode
LGA Pcode
LGA Pcode
LGA
LGA
Estimated Household Number
Number of Households
Estimated Number of IDP
Number of Individuals
output: {"column_mappings": [["Snapshot date", "Reported_date"], ["Date Occurred", "Date"], ["Country", "Country"], ["Country Code", "Country_code"], ["Round", null], ["State of Displacement", "State"], ["State Pcode", "State_Pcode"], ["LGA Pcode", "LGA Pcode"], ["LGA", "LGA"], ["CODs PCODE", null], ["Ward", null], ["Estimated Household Number", "Number of Households"], ["Estimated Number of IDP", "Number of Individuals"], ["Year", null], ["idp_category", 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], ["IDPs_from LGA_displaced_In Ward_YesNo", null], ["IDP HH_from LGA_displaced_In Ward", null], ["IDP IND_from LGA displaced_In Ward", null], ["StateCode_Previous_State of Displacement", null], ["StateName_Previous_State of Displacement", null], ["LGACode_Previous_State of Displacement of largest group 1", null], ["LGAName_Previous_State of Displacement", null], ["Date of arrival largest IDP group 1", null], ["IDP HH of largest Group 1", null], ["IDP IND of largest Group 1", null], ["StateCode_Previous_displacement of Largest Group 2", null], ["StateName_Previous_displacement of Largest Group 2", null], ["LGACode_Previous_displacement of Largest Group 2", null], ["LGAName_Previous_displacement of Largest Group 2", null], ["Date of arrival largest IDP group 2", null], ["IDPHH of largest Group 2", null], ["IDP IND of largest Group 2", null], ["Displaced_FirstTime_Displacement_YesNo", null], ["Displaced_FirstTime_Displacement_Percent", null], ["Displaced_2TIMES_Displacement_YesNo", null], ["Displaced_2TIMES_Displacement_Percent", null], ["Displaced_2TIMES_Displacement_STATECode", null], ["Displaced_2TIMES_Displacement_LGACode", null], ["Displaced_2TIMES_Displacement_Date", null], ["Displaced_3TIMES_Displacement_YesNo", null], ["Displaced_3TIMES_Displacement_Percent", null], ["Displaced_3TIMES_Displacement_STATECode", null], ["Displaced_3TIMES_Displacement_LGACode", null], ["Displaced_3TIMES_Displacement_Date", null], ["Displaced_3TIMES_More_Displacement_YesNo", null], ["Displaced_3TIMES_More_Displacement__Percent", null], ["Displaced_3TIMES_More_Displacement__STATECode", null], ["Displaced_3TIMES_More_Displacement_LGACode", null], ["Displaced_3TIMES_More_Displacement_Date", null]]}