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_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 |

TableB:
| Country                          | Country code   | Reported date   | admin_1_code   | admin_1_label   | admin_2_code   | admin_2_label   | date_enquete        |   hh_IDP_presents_36_mois |   ind_IDP_presents_36_mois |   hh_RETs_presents_36mo |   ind_RETs_presents_36mo |
|:---------------------------------|:---------------|:----------------|:---------------|:----------------|:---------------|:----------------|:--------------------|--------------------------:|---------------------------:|------------------------:|-------------------------:|
| Democratic Republic of the Congo | COD            | Apr-30-2022     | COD62          | SUD-KIVU        | COD6207        | WALUNGU         | 2022-03-30 00:00:00 |                         0 |                          0 |                       0 |                        0 |
| Democratic Republic of the Congo | COD            | Apr-30-2022     | COD62          | SUD-KIVU        | COD6203        | SHABUNDA        | 2022-03-29 00:00:00 |                         0 |                          0 |                      28 |                      185 |
| Democratic Republic of the Congo | COD            | Apr-30-2022     | COD62          | SUD-KIVU        | COD6212        | MWENGA          | 2022-03-25 00:00:00 |                        42 |                        253 |                       0 |                        0 |
| Democratic Republic of the Congo | COD            | Apr-30-2022     | COD62          | SUD-KIVU        | COD6203        | SHABUNDA        | 2022-04-08 00:00:00 |                        34 |                        207 |                      49 |                      294 |
| Democratic Republic of the Congo | COD            | Apr-30-2022     | COD62          | SUD-KIVU        | COD6210        | FIZI            | 2022-04-07 00:00:00 |                       187 |                        894 |                      56 |                      348 |
| Democratic Republic of the Congo | COD            | Apr-30-2022     | COD62          | SUD-KIVU        | COD6207        | WALUNGU         | 2022-03-28 00:00:00 |                       112 |                        556 |                       5 |                       31 |
| Democratic Republic of the Congo | COD            | Apr-30-2022     | COD62          | SUD-KIVU        | COD6205        | KALEHE          | 2022-03-27 00:00:00 |                       193 |                       1253 |                      68 |                      374 |
| Democratic Republic of the Congo | COD            | Apr-30-2022     | COD62          | SUD-KIVU        | COD6210        | FIZI            | 2022-03-26 00:00:00 |                         0 |                          0 |                       0 |                        0 |
| Democratic Republic of the Congo | COD            | Apr-30-2022     | COD62          | SUD-KIVU        | COD6212        | MWENGA          | 2022-04-08 00:00:00 |                        98 |                        560 |                       0 |                        0 |
| Democratic Republic of the Congo | COD            | Apr-30-2022     | COD62          | SUD-KIVU        | COD6212        | MWENGA          | 2022-04-09 00:00:00 |                        58 |                        348 |                       0 |                        0 |



source_headers: country_name
country_code
reported_date
admin_1_code
admin_1_label
admin_2_code
admin_2_label
Date_enquete
hh_PDIs_presents
ind_PDIs_presents
hh_RETs_presents
ind_RETs_presents
target_headers: Country
Country code
Reported date
admin_1_code
admin_1_label
admin_2_code
admin_2_label
date_enquete
hh_IDP_presents_36_mois
ind_IDP_presents_36_mois
hh_RETs_presents_36mo
ind_RETs_presents_36mo
column_mappings: country_name
Country
country_code
Country code
reported_date
Reported date
admin_1_code
admin_1_code
admin_1_label
admin_1_label
admin_2_code
admin_2_code
admin_2_label
admin_2_label
Date_enquete
date_enquete
hh_PDIs_presents
hh_IDP_presents_36_mois
ind_PDIs_presents
ind_IDP_presents_36_mois
hh_RETs_presents
hh_RETs_presents_36mo
ind_RETs_presents
ind_RETs_presents_36mo
output: {"column_mappings": [["country_name", "Country"], ["country_code", "Country code"], ["reported_date", "Reported date"], ["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", null], ["admin_3_label", null], ["Date_enquete", "date_enquete"], ["hh_PDIs_presents", "hh_IDP_presents_36_mois"], ["ind_PDIs_presents", "ind_IDP_presents_36_mois"], ["hh_RETs_presents", "hh_RETs_presents_36mo"], ["ind_RETs_presents", "ind_RETs_presents_36mo"]]}