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:
| SHCC Event Code   | Incident date       | Country     | Perpetrator       | Name of perpetrator              | Weapons use     | Explosive weapons use   | Other weapon type   | Total health worker killed   | Total health worker kidnapped   | Total health worker arrested    | Total health worker injured   | Total health worker assaulted   | Total number of attacks on facilities which reported destruction   | Total number of attacks on facilities which reported damage   | Forceful entry into health facility   | Occupation of medical facility   | Health transportation destroyed   | Health transportation damaged   | Health transportation stolen/highjacked   | Looting, theft, robbery, burglary of health supplies   | Obstruction to health care   |
|:------------------|:--------------------|:------------|:------------------|:---------------------------------|:----------------|:------------------------|:--------------------|:-----------------------------|:--------------------------------|:--------------------------------|:------------------------------|:--------------------------------|:-------------------------------------------------------------------|:--------------------------------------------------------------|:--------------------------------------|:---------------------------------|:----------------------------------|:--------------------------------|:------------------------------------------|:-------------------------------------------------------|:-----------------------------|
| 30090             | 2021-11-03 00:00:00 | Myanmar     | Opposition Group, | People's Defence Force (Myanmar) | Explosive       | Directly emplaced       | NotApplicable       |                              |                                 |                                 |                               |                                 |                                                                    |                                                               |                                       |                                  |                                   |                                 |                                           |                                                        |                              |
| 30309             | 2021-11-27 00:00:00 | Sudan       | State Actor       | State security forces            | Firearm         | NotApplicable           | NotApplicable       |                              |                                 | 2                               |                               |                                 |                                                                    |                                                               |                                       |                                  |                                   |                                 |                                           |                                                        |                              |
| 6722021           | 2021-03-25 11:50:00 | CAR         | No Information,   | No Information,                  | No Information, | NotApplicable           | NotApplicable       |                              |                                 |                                 |                               |                                 |                                                                    |                                                               |                                       |                                  |                                   |                                 |                                           | 1                                                      |                              |
| 27042             | 2021-02-12 00:00:00 | Myanmar     | State Actor       | Myanmar Police Force             | No Information, | NotApplicable           | NotApplicable       |                              |                                 |                                 |                               |                                 |                                                                    |                                                               |                                       |                                  |                                   |                                 |                                           |                                                        |                              |
| 3304              | 2021-02-02 00:00:00 | Syria       | Opposition Group, | Syrian Democratic Forces         | No Information, | NotApplicable           | NotApplicable       |                              |                                 |                                 |                               |                                 |                                                                    |                                                               |                                       |                                  |                                   |                                 |                                           | 1                                                      |                              |
| 3329              | 2021-07-28 00:00:00 | Syria       | Opposition Group, | Unnamed non-state armed group    | No Information, | NotApplicable           | NotApplicable       |                              |                                 |                                 |                               |                                 |                                                                    |                                                               |                                       |                                  |                                   |                                 |                                           | 1                                                      |                              |
| 29436             | 2021-09-14 00:00:00 | Afghanistan | Opposition Group, | Islamic Emirate of Afghanistan   | NotApplicable   | NotApplicable           | NotApplicable       |                              |                                 |                                 |                               |                                 |                                                                    |                                                               |                                       |                                  |                                   |                                 |                                           |                                                        |                              |
| 6772021           | 2021-03-10 09:50:00 | CAR         | No Information,   | No Information,                  | No Information, | NotApplicable           | NotApplicable       |                              |                                 |                                 |                               |                                 |                                                                    |                                                               |                                       |                                  |                                   |                                 | 1                                         |                                                        |                              |
| 27461             | 2021-05-15 00:00:00 | OPT         | State Actor       | Israeli Defence Forces           | Explosive       | Air-launched            | NotApplicable       |                              |                                 |                                 |                               |                                 |                                                                    | 1                                                             |                                       |                                  |                                   |                                 |                                           |                                                        |                              |
| oPt006063         | 2021-07-23 17:00:00 | OPT         | No Information,   | No Information,                  | No Information, | NotApplicable           | NotApplicable       |                              |                                 |                                 |                               |                                 |                                                                    |                                                               |                                       |                                  |                                   |                                 |                                           |                                                        | 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: Incident date
Country
Perpetrator 
Name of perpetrator 
Weapons use
Total health worker killed
Total health worker kidnapped
Total health worker arrested 
Total health worker injured
Total health worker assaulted
Total number of attacks on facilities which reported destruction
Total number of attacks on facilities which reported damage
Forceful entry into health facility
Occupation of medical facility
Health transportation destroyed
Health transportation damaged
Health transportation stolen/highjacked
Looting, theft, robbery, burglary of health supplies
Obstruction to health care
target_headers: Date
Country
Reported Perpetrator
Reported Perpetrator Name
Weapon Carried/Used
Health Workers Killed
Health Workers Kidnapped
Health Workers Arrested
Health Workers Injured
Health Workers Assaulted
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
column_mappings: Incident date
Date
Country
Country
Perpetrator 
Reported Perpetrator
Name of perpetrator 
Reported Perpetrator Name
Weapons use
Weapon Carried/Used
Total health worker killed
Health Workers Killed
Total health worker kidnapped
Health Workers Kidnapped
Total health worker arrested 
Health Workers Arrested
Total health worker injured
Health Workers Injured
Total health worker assaulted
Health Workers Assaulted
Total number of attacks on facilities which reported destruction
Number of Attacks on Health Facilities Reporting Destruction
Total number of attacks on facilities which reported damage
Number of Attacks on Health Facilities Reporting Damaged
Forceful entry into health facility
Forceful Entry into Health Facility
Occupation of medical facility
Occupation of Health Facility
Health transportation destroyed
Health Transportation Destroyed
Health transportation damaged
Health Transportation Damaged
Health transportation stolen/highjacked
Health Transportation Stolen/Highjacked
Looting, theft, robbery, burglary of health supplies
Looting/Theft/Robbery/Burglary of Health Supplies
Obstruction to health care
Obstruction to health care
output: {"column_mappings": [["SHCC Event Code", null], ["Incident date", "Date"], ["Country", "Country"], ["Perpetrator ", "Reported Perpetrator"], ["Name of perpetrator ", "Reported Perpetrator Name"], ["Weapons use", "Weapon Carried/Used"], ["Explosive weapons use", null], ["Other weapon type", null], ["Total health worker killed", "Health Workers Killed"], ["Total health worker kidnapped", "Health Workers Kidnapped"], ["Total health worker arrested ", "Health Workers Arrested"], ["Total health worker injured", "Health Workers Injured"], ["Total health worker assaulted", "Health Workers Assaulted"], ["Total number of attacks on facilities which reported destruction", "Number of Attacks on Health Facilities Reporting Destruction"], ["Total number of attacks on facilities which reported damage", "Number of Attacks on Health Facilities Reporting Damaged"], ["Forceful entry into health facility", "Forceful Entry into Health Facility"], ["Occupation of medical facility", "Occupation of Health Facility"], ["Health transportation destroyed", "Health Transportation Destroyed"], ["Health transportation damaged", "Health Transportation Damaged"], ["Health transportation stolen/highjacked", "Health Transportation Stolen/Highjacked"], ["Looting, theft, robbery, burglary of health supplies", "Looting/Theft/Robbery/Burglary of Health Supplies"], ["Obstruction to health care", "Obstruction to health care"]]}