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:
| Unnamed: 0      |   Total conflict-related incidents |   Total health worker killed |   Total health worker injured |   Total health worker assaulted |   Sexual violence against health worker |   Total health worker kidnapped |   Total health worker arrested  |   Total health facility destroyed |   Total health facility damage |   Health transportation destroyed |   Health transportation damaged |   Health transportation stolen/hijacked   |   Access denied incidents |   Forced closure incidents |   Security measure taken |
|:----------------|-----------------------------------:|-----------------------------:|------------------------------:|--------------------------------:|----------------------------------------:|--------------------------------:|--------------------------------:|----------------------------------:|-------------------------------:|----------------------------------:|--------------------------------:|------------------------------------------:|--------------------------:|---------------------------:|-------------------------:|
| Mali            |                                 14 |                            0 |                             1 |                               0 |                                       0 |                               7 |                               0 |                                 0 |                              0 |                                 1 |                               1 |                                         5 |                         0 |                          0 |                        1 |
| South Sudan     |                                 37 |                           12 |                             9 |                               2 |                                       0 |                               6 |                               6 |                                 2 |                              3 |                                 0 |                               0 |                                         1 |                         2 |                          0 |                       13 |
| Cameroon        |                                  2 |                            1 |                             0 |                               0 |                                       0 |                               0 |                               0 |                                 0 |                              0 |                                 0 |                               0 |                                         0 |                         0 |                          0 |                        0 |
| Burkina Faso    |                                  3 |                            0 |                             0 |                               0 |                                       0 |                               0 |                               0 |                                 0 |                              0 |                                 0 |                               0 |                                         0 |                         0 |                          0 |                        3 |
| Afghanistan     |                                 66 |                            8 |                             6 |                               3 |                                       0 |                              16 |                               9 |                                 0 |                             14 |                                 1 |                               3 |                                         2 |                         2 |                          3 |                        8 |
| OPT             |                                 93 |                            0 |                            21 |                               5 |                                       0 |                               0 |                              38 |                                 0 |                              0 |                                 0 |                              17 |                                         5 |                        57 |                          0 |                        1 |
| Libya           |                                 15 |                            0 |                             0 |                               2 |                                       0 |                               7 |                               0 |                                 0 |                              1 |                                 0 |                               1 |                                         0 |                         0 |                          0 |                        2 |
| Egypt           |                                  8 |                            0 |                             0 |                               3 |                                       0 |                               0 |                               0 |                                 0 |                              1 |                                 0 |                               0 |                                         0 |                         1 |                          1 |                        0 |
| The Philippines |                                  5 |                            4 |                             0 |                               0 |                                       0 |                               1 |                               0 |                                 0 |                              0 |                                 0 |                               0 |                                         0 |                         0 |                          0 |                        1 |
| Turkey          |                                  5 |                            1 |                             0 |                               0 |                                       0 |                               0 |                              16 |                                 0 |                              1 |                                 0 |                               1 |                                         0 |                         0 |                          1 |                        1 |

TableB:
| Date                | Country   | Country ISO   | Reported Perpetrator                                   | Reported Perpetrator Name              | Weapon Carried/Used                 |   Number of Attacks on Health Facilities Reporting Destruction |   Number of Attacks on Health Facilities Reporting Damaged |   Forceful Entry into Health Facility |   Occupation of Health Facility |   Health Transportation Destroyed |   Health Transportation Damaged |   Health Transportation Stolen/Highjacked |   Looting/Theft/Robbery/Burglary of Health Supplies |   Obstruction to health care |   Access Denied |   Health Workers Killed |   Health Workers Injured |   Health Workers Kidnapped |   Health Workers Arrested | Known Kidnapping or Arrest Outcome   |   Health Workers Threatened |   Health Workers Assaulted |   Health Workers Sexually Assaulted |
|:--------------------|:----------|:--------------|:-------------------------------------------------------|:---------------------------------------|:------------------------------------|---------------------------------------------------------------:|-----------------------------------------------------------:|--------------------------------------:|--------------------------------:|----------------------------------:|--------------------------------:|------------------------------------------:|----------------------------------------------------:|-----------------------------:|----------------:|------------------------:|-------------------------:|---------------------------:|--------------------------:|:-------------------------------------|----------------------------:|---------------------------:|------------------------------------:|
| 2022-05-24 00:00:00 | Ukraine   | UKR           | Foreign Forces - military                              | Armed Forces of the Russian Federation | Firearms                            |                                                              0 |                                                          1 |                                     0 |                               0 |                                 0 |                               0 |                                         0 |                                                   0 |                            0 |               0 |                       0 |                        0 |                          0 |                         0 |                                      |                           0 |                          0 |                                   0 |
| 2022-02-01 00:00:00 | Nigeria   | NGA           | Armed Forces of Government or Self-Declared Government | Nigerian Armed Forces                  | Firearms                            |                                                              0 |                                                          0 |                                     0 |                               0 |                                 0 |                               0 |                                         0 |                                                   0 |                            0 |               0 |                       0 |                        0 |                          0 |                         1 | NoInformation                        |                           0 |                          0 |                                   0 |
| 2022-10-20 00:00:00 | Syria     | SYR           | Employee                                               | Employee                               | Not Applicable - no direct violence |                                                              0 |                                                          0 |                                     0 |                               0 |                                 0 |                               0 |                                         0 |                                                   0 |                            0 |               0 |                       0 |                        0 |                          0 |                         0 |                                      |                           0 |                          0 |                                   0 |
| 2022-10-27 00:00:00 | Myanmar   | MMR           | Armed Forces of Government or Self-Declared Government | Myanmar Armed Forces                   | Firearms                            |                                                              0 |                                                          0 |                                     1 |                               0 |                                 0 |                               0 |                                         0 |                                                   0 |                            0 |               0 |                       0 |                        0 |                          0 |                         0 |                                      |                           0 |                          0 |                                   0 |
| 2022-07-26 00:00:00 | Ethiopia  | ETH           | Police                                                 | Government of Ethiopia                 | Not Applicable - no direct violence |                                                              0 |                                                          0 |                                     0 |                               0 |                                 0 |                               0 |                                         0 |                                                   0 |                            1 |               0 |                       0 |                        0 |                          0 |                         0 |                                      |                           0 |                          0 |                                   0 |
| 2022-03-01 00:00:00 | Ukraine   | UKR           | Foreign Forces - military                              | Armed Forces of the Russian Federation | Firearms                            |                                                              0 |                                                          0 |                                     0 |                               0 |                                 0 |                               0 |                                         0 |                                                   0 |                            0 |               0 |                       1 |                        1 |                          0 |                         0 |                                      |                           0 |                          0 |                                   0 |
| 2022-02-25 00:00:00 | Ukraine   | UKR           | Foreign Forces - military                              | Armed Forces of the Russian Federation | Firearms                            |                                                              0 |                                                          1 |                                     0 |                               0 |                                 0 |                               0 |                                         0 |                                                   0 |                            0 |               0 |                       0 |                        0 |                          0 |                         0 |                                      |                           0 |                          0 |                                   0 |
| 2022-11-21 00:00:00 | Myanmar   | MMR           | Armed Forces of Government or Self-Declared Government | Myanmar Armed Forces                   | No information on the weapon used   |                                                              0 |                                                          0 |                                     0 |                               0 |                                 0 |                               0 |                                         0 |                                                   0 |                            0 |               0 |                       0 |                        0 |                          0 |                         0 |                                      |                           0 |                          0 |                                   0 |
| 2022-08-30 00:00:00 | Ukraine   | UKR           | Criminal                                               | Criminal                               | Unarmed perpetrator                 |                                                              0 |                                                          0 |                                     0 |                               0 |                                 0 |                               0 |                                         0 |                                                   0 |                            0 |               0 |                       0 |                        0 |                          0 |                         0 |                                      |                           0 |                          0 |                                   0 |
| 2022-02-20 00:00:00 | Sudan     | SDN           | Armed Forces of Government or Self-Declared Government | Sudanese Armed Forces                  | Firearms                            |                                                              0 |                                                          1 |                                     1 |                               0 |                                 0 |                               0 |                                         0 |                                                   0 |                            0 |               0 |                       0 |                        0 |                          0 |                         0 |                                      |                           0 |                          0 |                                   0 |



source_headers: Unnamed: 0
Total health worker killed
Total health worker injured
Total health worker assaulted
Sexual violence against health worker
Total health worker kidnapped
Total health worker arrested 
Health transportation destroyed
Health transportation damaged
Health transportation stolen/hijacked  
Access denied incidents
target_headers: Country
Health Workers Killed
Health Workers Injured
Health Workers Assaulted
Health Workers Sexually Assaulted
Health Workers Kidnapped
Health Workers Arrested
Health Transportation Destroyed
Health Transportation Damaged
Health Transportation Stolen/Highjacked
Access Denied
column_mappings: Unnamed: 0
Country
Total health worker killed
Health Workers Killed
Total health worker injured
Health Workers Injured
Total health worker assaulted
Health Workers Assaulted
Sexual violence against health worker
Health Workers Sexually Assaulted
Total health worker kidnapped
Health Workers Kidnapped
Total health worker arrested 
Health Workers Arrested
Health transportation destroyed
Health Transportation Destroyed
Health transportation damaged
Health Transportation Damaged
Health transportation stolen/hijacked  
Health Transportation Stolen/Highjacked
Access denied incidents
Access Denied
output: {"column_mappings": [["Unnamed: 0", "Country"], ["Total conflict-related incidents", null], ["Total health worker killed", "Health Workers Killed"], ["Total health worker injured", "Health Workers Injured"], ["Total health worker assaulted", "Health Workers Assaulted"], ["Sexual violence against health worker", "Health Workers Sexually Assaulted"], ["Total health worker kidnapped", "Health Workers Kidnapped"], ["Total health worker arrested ", "Health Workers Arrested"], ["Total health facility destroyed", null], ["Total health facility damage", null], ["Health transportation destroyed", "Health Transportation Destroyed"], ["Health transportation damaged", "Health Transportation Damaged"], ["Health transportation stolen/hijacked  ", "Health Transportation Stolen/Highjacked"], ["Access denied incidents", "Access Denied"], ["Forced closure incidents", null], ["Security measure taken", null]]}