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       | 1#1#c#1 SSID     | 1#1#d#1 _Site Name   | 1#1#a#1 _Site Assessment Date   | 1#4#a#1_Site Open date   | 1#5#e#1 Reason for displacement   | 1#3#b#1 Site Type    |   1#1#f#2_GPS Lat |   1#1#f#1_GPS Long | 1#1#a#3_Admin 0              | Admin 0 Pcode   | 1#1#e#1_Admin 1   | Admin 1 Pcode   | 1#1#e#2_Admin 2   | Admin 2 Pcode   | 1#1#e#3_Admin 3   | Admin 3 Pcode   |   2#1#a#1_No# of Households |   2#1#b#1_No# of Individuals | 2#1#b#2_No# of Male Individuals   | 2#1#b#3_No# of Female Individuals    | 1#5#b#2 Place of Origin of the largest IDP group (Admin 2)   | Place of Origin of the largest IDP group (Admin 2 Pcode)   | 1#5#c#2 Place of Origin of the second largest IDP group (Admin 2   | Place of Origin of the second largest IDP group (Admin 2 Pcode)   |
|:--------------------|:-----------------|:---------------------|:--------------------------------|:-------------------------|:----------------------------------|:---------------------|------------------:|-------------------:|:-----------------------------|:----------------|:------------------|:----------------|:------------------|:----------------|:------------------|:----------------|----------------------------:|-----------------------------:|:----------------------------------|:-------------------------------------|:-------------------------------------------------------------|:-----------------------------------------------------------|:-------------------------------------------------------------------|:------------------------------------------------------------------|
| 2018-04-30 00:00:00 | DRC08004000202SS | KIBABI/POLICE        | 2018-04-25 00:00:00             | 2012-09-01 00:00:00      | Conflict                          | Camp/Site            |          -1.55579 |            28.8301 | Democratic Republic of Congo | COD             | Nord-Kvu          | COD61           | MASISI            | COD6103         | BAHUNDE           | COD610307       |                         334 |                         1380 | 688                               | 692                                  | MASISI                                                       | COD6103                                                    | MASISI                                                             | COD6103                                                           |
| 2018-03-30 00:00:00 | TANG_014         | KALONDA              | 2018-03-20 00:00:00             | 2017-02-22 00:00:00      | Conflict                          | Site                 |          -5.897   |            29.191  | Democratic Republic of Congo | COD             | TANGANYIKA        | COD74           | KALEMIE           | COD74002        | TUMBWE            | COD740204       |                        1565 |                         2154 |                                   |                                      | KALEMIE                                                      | COD7402                                                    |                                                                    |                                                                   |
| 2018-03-30 00:00:00 | TANG_011         | KASEKE               | 2018-03-21 00:00:00             | 2016-09-19 00:00:00      | Conflict                          | Site                 |          -5.92796 |            29.1739 | Democratic Republic of Congo | COD             | TANGANYIKA        | COD74           | KALEMIE           | COD74002        | DU LAC            |                 |                        2999 |                         4885 |                                   |                                      | KALEMIE                                                      | COD7402                                                    |                                                                    |                                                                   |
| 2018-04-30 00:00:00 | DRC08004010104SS | MALEMO               | 2018-04-25 00:00:00             | 2011-03-01 00:00:00      | Conflict                          | Camp/Site            |          -0.99499 |            28.8777 | Democratic Republic of Congo | COD             | Nord-Kvu          | COD61           | MASISI            | COD6103         | BASHALI           | COD610304       |                         469 |                         1572 | 746                               | 826                                  | MASISI                                                       | COD6103                                                    | WALIKALE                                                           | COD6104                                                           |
| 2018-04-30 00:00:00 | DRC08007000108SS | MUHETO               | 2018-04-25 00:00:00             | 2014-01-15 00:00:00      | Conflict                          | Camp/Site            |          -1.336   |            28.95   | Democratic Republic of Congo | COD             | Nord-Kvu          | COD61           | MASISI            | COD6103         | BASHALI           | COD610304       |                         941 |                         2698 | 1115                              | 1583                                 | MASISI                                                       | COD6103                                                    | MASISI                                                             | COD6103                                                           |
| 2018-03-30 00:00:00 | DRC08004000202SS | KIBABI/POLICE        | 2018-03-25 00:00:00             | 2012-09-01 00:00:00      | Conflict                          | Camp/Site            |          -1.55579 |            28.8301 | Democratic Republic of Congo | COD             | Nord-Kvu          | COD61           | MASISI            | COD6103         | BAHUNDE           | COD610307       |                         333 |                         1378 | 687                               | 691                                  | MASISI                                                       | COD6103                                                    | MASISI                                                             | COD6103                                                           |
| 2018-03-30 00:00:00 | TANG_002         | KALUNGA              | 2018-03-21 00:00:00             | 2016-11-19 00:00:00      | Conflict                          | Site                 |          -5.893   |            29.185  | Democratic Republic of Congo | COD             | TANGANYIKA        | COD74           | KALEMIE           | COD74002        | TUMBWE            | COD740204       |                        4278 |                         8451 |                                   |                                      | KALEMIE                                                      | COD7402                                                    |                                                                    |                                                                   |
| 2018-03-30 00:00:00 | DRC08007000700SS | KANABA               | 2018-03-25 00:00:00             | 2015-06-10 00:00:00      | Conflict                          | Camp/Site            |          -1.22834 |            29.2204 | Democratic Republic of Congo | COD             | Nord-Kvu          | COD61           | RUTSHURU          | COD6111         | BWITO             | COD611101       |                        1661 |                         6339 | 2764                              | 3575                                 | RUTSHURU                                                     | COD6111                                                    | RUTSHURU                                                           | COD6111                                                           |
| 2018-03-30 00:00:00 | TANG_001         | MUKUKU/LUKWNGULO     | 2018-03-20 00:00:00             | 2017-08-07 00:00:00      | Conflict                          | Site                 |          -5.88474 |            29.2149 | Democratic Republic of Congo | COD             | TANGANYIKA        | COD74           | KALEMIE           | COD74002        | TUMBWE            | COD740204       |                         607 |                          884 |                                   |                                      | KALEMIE                                                      | COD7402                                                    |                                                                    |                                                                   |
| 2018-03-30 00:00:00 | DRC08007000600SS | RUSHASHI             | 2018-03-25 00:00:00             | 2013-06-10 00:00:00      | Conflict                          | Camp/Site            |          -1.12507 |            29.2016 | Democratic Republic of Congo | COD             | Nord-Kvu          | COD61           | RUTSHURU          | COD6111         | BWITO             | COD611101       |                         862 |                         3494 | 1646                              | 1848                                 | RUTSHURU                                                     | COD6111                                                    | RUTSHURU                                                           | COD6111                                                           |

TableB:
| Reported_Date       | Country                          | Country_code   | admin_1_code   | admin_1_label   | admin_2_code   | admin_2_label   | admin_3_code   | admin_3_label   | date_enquete        |   hh_IDP_presents_36_mois |   ind_IDP_presents_36_mois |   hh_RETs_presents_36mo |   ind_RETs_presents_36mo |
|:--------------------|:---------------------------------|:---------------|:---------------|:----------------|:---------------|:----------------|:---------------|:----------------|:--------------------|--------------------------:|---------------------------:|------------------------:|-------------------------:|
| 2021-08-31 00:00:00 | Democratic Republic of the Congo | COD            | COD62          | SUD-KIVU        | COD6202        | KABARE          | COD6202ZS05    | NYANTENDE       | 2021-07-30 00:00:00 |                         0 |                          0 |                       0 |                        0 |
| 2021-08-31 00:00:00 | Democratic Republic of the Congo | COD            | COD62          | SUD-KIVU        | COD6202        | KABARE          | COD6202ZS04    | MITI-MURHESA    | 2021-08-04 00:00:00 |                         0 |                          0 |                       0 |                        0 |
| 2021-08-31 00:00:00 | Democratic Republic of the Congo | COD            | COD62          | SUD-KIVU        | COD6203        | SHABUNDA        | COD6203ZS03    | MULUNGU         | 2021-08-17 00:00:00 |                         0 |                          0 |                       0 |                        0 |
| 2021-08-31 00:00:00 | Democratic Republic of the Congo | COD            | COD62          | SUD-KIVU        | COD6208        | UVIRA           | COD6208ZS04    | UVIRA           | 2021-07-31 00:00:00 |                        25 |                        150 |                       0 |                        0 |
| 2021-08-31 00:00:00 | Democratic Republic of the Congo | COD            | COD62          | SUD-KIVU        | COD6205        | KALEHE          | COD6205ZS03    | KALONGE         | 2021-07-28 00:00:00 |                       185 |                        942 |                      50 |                      250 |
| 2021-08-31 00:00:00 | Democratic Republic of the Congo | COD            | COD62          | SUD-KIVU        | COD6203        | SHABUNDA        | COD6203ZS02    | LULINGU         | 2021-07-30 00:00:00 |                       128 |                        597 |                     124 |                      741 |
| 2021-08-31 00:00:00 | Democratic Republic of the Congo | COD            | COD62          | SUD-KIVU        | COD6207        | WALUNGU         | COD6207ZS01    | KAZIBA          | 2021-08-11 00:00:00 |                         0 |                          0 |                       0 |                        0 |
| 2021-08-31 00:00:00 | Democratic Republic of the Congo | COD            | COD62          | SUD-KIVU        | COD6205        | KALEHE          | COD6205ZS04    | MINOVA          | 2021-08-03 00:00:00 |                        67 |                        283 |                       6 |                       36 |
| 2021-08-31 00:00:00 | Democratic Republic of the Congo | COD            | COD62          | SUD-KIVU        | COD6208        | UVIRA           | COD6208ZS02    | LEMERA          | 2021-08-01 00:00:00 |                         4 |                         18 |                       0 |                        0 |
| 2021-08-31 00:00:00 | Democratic Republic of the Congo | COD            | COD62          | SUD-KIVU        | COD6207        | WALUNGU         | COD6207ZS01    | KAZIBA          | 2021-08-17 00:00:00 |                         0 |                          0 |                       0 |                        0 |



source_headers: Snapshot date
1#1#a#1 _Site Assessment Date
1#1#a#3_Admin 0
Admin 0 Pcode
1#1#e#1_Admin 1
Admin 1 Pcode
1#1#e#2_Admin 2
Admin 2 Pcode
1#1#e#3_Admin 3
Admin 3 Pcode
target_headers: Reported_Date
date_enquete
Country
Country_code
admin_1_label
admin_1_code
admin_2_label
admin_2_code
admin_3_label
admin_3_code
column_mappings: Snapshot date
Reported_Date
1#1#a#1 _Site Assessment Date
date_enquete
1#1#a#3_Admin 0
Country
Admin 0 Pcode
Country_code
1#1#e#1_Admin 1
admin_1_label
Admin 1 Pcode
admin_1_code
1#1#e#2_Admin 2
admin_2_label
Admin 2 Pcode
admin_2_code
1#1#e#3_Admin 3
admin_3_label
Admin 3 Pcode
admin_3_code
output: {"column_mappings": [["Snapshot date", "Reported_Date"], ["1#1#c#1 SSID", null], ["1#1#d#1 _Site Name", null], ["1#1#a#1 _Site Assessment Date", "date_enquete"], ["1#4#a#1_Site Open date", null], ["1#5#e#1 Reason for displacement", null], ["1#3#b#1 Site Type ", null], ["1#1#f#2_GPS Lat", null], ["1#1#f#1_GPS Long", null], ["1#1#a#3_Admin 0", "Country"], ["Admin 0 Pcode", "Country_code"], ["1#1#e#1_Admin 1", "admin_1_label"], ["Admin 1 Pcode", "admin_1_code"], ["1#1#e#2_Admin 2", "admin_2_label"], ["Admin 2 Pcode", "admin_2_code"], ["1#1#e#3_Admin 3", "admin_3_label"], ["Admin 3 Pcode", "admin_3_code"], ["2#1#a#1_No# of Households", null], ["2#1#b#1_No# of Individuals", null], ["2#1#b#2_No# of Male Individuals", null], ["2#1#b#3_No# of Female Individuals ", null], ["1#5#b#2 Place of Origin of the largest IDP group (Admin 2)", null], ["Place of Origin of the largest IDP group (Admin 2 Pcode)", null], ["1#5#c#2 Place of Origin of the second largest IDP group (Admin 2", null], ["Place of Origin of the second largest IDP group (Admin 2 Pcode)", null]]}