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   | admin_1_code   | admin_1_label   | admin_2_code   | admin_2_label           | admin_3_code   | admin_3_label   | today_calculate   |   hh_IDP_presents_36_mois |   ind_IDP_presents_36_mois |   hh_RETs_presents_36mo |   ind_RETs_presents_36mo |
|:--------------------|:---------------------------------|:---------------|:---------------|:----------------|:---------------|:------------------------|:---------------|:----------------|:------------------|--------------------------:|---------------------------:|------------------------:|-------------------------:|
| 2021-04-30 00:00:00 | Democratic Republic of the Congo | COD            | COD61          | NORD-KIVU       | COD6107        | BENI TERRITOIRE (OICHA) | COD6107ZS01    | KALUNGUTA       | 2021-03-27        |                        28 |                        113 |                      39 |                      273 |
| 2021-04-30 00:00:00 | Democratic Republic of the Congo | COD            | COD61          | NORD-KIVU       | COD6111        | RUTSHURU                | COD6111ZS06    | RWANGUBA        | 2021-03-22        |                         0 |                          0 |                       0 |                        0 |
| 2021-04-30 00:00:00 | Democratic Republic of the Congo | COD            | COD61          | NORD-KIVU       | COD6107        | BENI TERRITOIRE (OICHA) | COD6107ZS04    | MABALAKO        | 2021-03-21        |                        47 |                        190 |                       0 |                        0 |
| 2021-04-30 00:00:00 | Democratic Republic of the Congo | COD            | COD61          | NORD-KIVU       | COD6110        | BUTEMBO VILLE           | COD6110ZS02    | KATWA           | 2021-03-28        |                         8 |                         49 |                       0 |                        0 |
| 2021-04-30 00:00:00 | Democratic Republic of the Congo | COD            | COD61          | NORD-KIVU       | COD6111        | RUTSHURU                | COD6111ZS05    | RUTSHURU        | 2021-03-23        |                        85 |                        455 |                      22 |                      176 |
| 2021-04-30 00:00:00 | Democratic Republic of the Congo | COD            | COD61          | NORD-KIVU       | COD6105        | LUBERO                  | COD6105ZS06    | MASEREKA        | 2021-03-21        |                        18 |                        104 |                       0 |                        0 |
| 2021-04-30 00:00:00 | Democratic Republic of the Congo | COD            | COD61          | NORD-KIVU       | COD6111        | RUTSHURU                | COD6111ZS05    | RUTSHURU        | 2021-03-23        |                         4 |                         18 |                       0 |                        0 |
| 2021-04-30 00:00:00 | Democratic Republic of the Congo | COD            | COD61          | NORD-KIVU       | COD6109        | BENI (Ville)            | COD6109ZS01    | BENI (ville)    | 2021-03-17        |                        62 |                        186 |                       0 |                        0 |
| 2021-04-30 00:00:00 | Democratic Republic of the Congo | COD            | COD61          | NORD-KIVU       | COD6104        | WALIKALE                | COD6104ZS01    | ITEBERO         | 2021-03-31        |                         5 |                         18 |                       8 |                       46 |
| 2021-04-30 00:00:00 | Democratic Republic of the Congo | COD            | COD61          | NORD-KIVU       | COD6103        | MASISI                  | COD6103ZS03    | MASISI          | 2021-04-19        |                        95 |                        567 |                      10 |                       55 |

TableB:
| country_name                     | country_code   | reported_date   | admin_1_code   | admin_1_label   | admin_2_code   | admin_2_label   | admin_3_code   | admin_3_label   | Date_enquete        |   hh_PDIs_presents |   ind_PDIs_presents |   hh_RETs_presents |   ind_RETs_presents |
|:---------------------------------|:---------------|:----------------|:---------------|:----------------|:---------------|:----------------|:---------------|:----------------|:--------------------|-------------------:|--------------------:|-------------------:|--------------------:|
| Democratic Republic of the Congo | COD            | Dec-31-20       | COD74          | TANGANYIKA      | COD7409        | KONGOLO         | COD7409ZS01    | KONGOLO         | 2020-12-27 00:00:00 |                  0 |                   0 |                  0 |                   0 |
| Democratic Republic of the Congo | COD            | Dec-31-20       | COD74          | TANGANYIKA      | COD7404        | MOBA            | COD7404ZS02    | MOBA            | 2020-11-09 00:00:00 |                  0 |                   0 |                  0 |                   0 |
| Democratic Republic of the Congo | COD            | Dec-31-20       | COD74          | TANGANYIKA      | COD7410        | NYUNZU          | COD7410ZS01    | NYUNZU          | 2020-11-17 00:00:00 |                  0 |                   0 |                  0 |                   0 |
| Democratic Republic of the Congo | COD            | Dec-31-20       | COD74          | TANGANYIKA      | COD7406        | MANONO          | COD7406ZS02    | KIAMBI          | 2020-12-31 00:00:00 |                  0 |                   0 |                  0 |                   0 |
| Democratic Republic of the Congo | COD            | Dec-31-20       | COD74          | TANGANYIKA      | COD7409        | KONGOLO         | COD7409ZS02    | MBULULA         | 2020-12-29 00:00:00 |                 10 |                  60 |                  0 |                   0 |
| Democratic Republic of the Congo | COD            | Dec-31-20       | COD74          | TANGANYIKA      | COD7404        | MOBA            | COD7404ZS01    | KANSIMBA        | 2020-11-14 00:00:00 |                  0 |                   0 |                  0 |                   0 |
| Democratic Republic of the Congo | COD            | Dec-31-20       | COD74          | TANGANYIKA      | COD7406        | MANONO          | COD7406ZS01    | ANKORO          | 2020-12-23 00:00:00 |                  0 |                   0 |                  0 |                   0 |
| Democratic Republic of the Congo | COD            | Dec-31-20       | COD74          | TANGANYIKA      | COD7410        | NYUNZU          | COD7410ZS01    | NYUNZU          | 2020-11-16 00:00:00 |                  6 |                  35 |                  7 |                  38 |
| Democratic Republic of the Congo | COD            | Dec-31-20       | COD74          | TANGANYIKA      | COD7404        | MOBA            | COD7404ZS01    | KANSIMBA        | 2020-11-12 00:00:00 |                  0 |                   0 |                  0 |                   0 |
| Democratic Republic of the Congo | COD            | Dec-31-20       | COD74          | TANGANYIKA      | COD7409        | KONGOLO         | COD7409ZS01    | KONGOLO         | 2020-12-22 00:00:00 |                  0 |                   0 |                  0 |                   0 |



source_headers: Reported_Date
Country
Country_Code
admin_1_code
admin_1_label
admin_2_code
admin_2_label
admin_3_code
admin_3_label
today_calculate
hh_IDP_presents_36_mois
ind_IDP_presents_36_mois
hh_RETs_presents_36mo
ind_RETs_presents_36mo
target_headers: reported_date
country_name
country_code
admin_1_code
admin_1_label
admin_2_code
admin_2_label
admin_3_code
admin_3_label
Date_enquete
hh_PDIs_presents
ind_PDIs_presents
hh_RETs_presents
ind_RETs_presents
column_mappings: Reported_Date
reported_date
Country
country_name
Country_Code
country_code
admin_1_code
admin_1_code
admin_1_label
admin_1_label
admin_2_code
admin_2_code
admin_2_label
admin_2_label
admin_3_code
admin_3_code
admin_3_label
admin_3_label
today_calculate
Date_enquete
hh_IDP_presents_36_mois
hh_PDIs_presents
ind_IDP_presents_36_mois
ind_PDIs_presents
hh_RETs_presents_36mo
hh_RETs_presents
ind_RETs_presents_36mo
ind_RETs_presents
output: {"column_mappings": [["Reported_Date", "reported_date"], ["Country", "country_name"], ["Country_Code", "country_code"], ["admin_1_code", "admin_1_code"], ["admin_1_label", "admin_1_label"], ["admin_2_code", "admin_2_code"], ["admin_2_label", "admin_2_label"], ["admin_3_code", "admin_3_code"], ["admin_3_label", "admin_3_label"], ["today_calculate", "Date_enquete"], ["hh_IDP_presents_36_mois", "hh_PDIs_presents"], ["ind_IDP_presents_36_mois", "ind_PDIs_presents"], ["hh_RETs_presents_36mo", "hh_RETs_presents"], ["ind_RETs_presents_36mo", "ind_RETs_presents"]]}