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       |   DTM Round | Country   | Country Code   | State Pcode   | State of Displacement   | LGA Pcode   | LGA            | CODs PCODE   | WARD            |   Estimated Household Number |   Estimated Number of IDP |   Year of Displacement of Majority | IDP category                  | State of Origin of Majority code   | State of Origin of Majority   | LGA of Origin of Majority code   | LGA of Origin of Majority   | Displacement Reason insurgency Yes / No   | Displacement Reason insurg Household Number   | Displacement Reason insurg Estimated Number of IDP   | Displacement Reason Communal clash Yes / No   | Displacement Reason clash Estimated Household Number   | Displacement Reason clash Estimated Number of IDP   | Displacement Reason disaster YesNo   | Displacement Reason disaster Estimated Household Number   | Displacement Reason disaster Estimated Number of IDP   | IDPs from LGA displaced In Ward Yes / No   | IDP HH from LGA displaced In Ward   | IDP IND from LGA displaced In Ward   | StateCode Previous State of Displacement   | StateName Previous State of Displacement   | LGACode Previous State of Displacement of largest group 1   | LGAName Previous State of Displacement   | Date of arrival largest IDP group 1   | IDP HH of largest Group 1   | IDP IND of largest Group 1   | StateCode Previous displacement of Largest Group 2   | StateName Previous displacement of Largest Group 2   | LGACode Previous displacement of Largest Group 2   | LGAName Previous displacement of Largest Group 2   | Date of arrival largest IDP group 2   | IDPHH of largest Group 2   | IDP IND of largest Group 2   | Displaced FirstTime Displacement Yes / No   |   Displaced FirstTime Displacement Percent | Displaced 2TIMES Displacement YesNo   | Displaced 2TIMES Displacement Percent   | Displaced 2TIMES Displacement STATECode   | Displaced 2TIMES Displacement LGACode   | Displaced 2TIMES Displacement Date   | Displaced 3TIMES Displacement Yes / No   | Displaced 3TIMES Displacement Percent   | Displaced 3TIMES Displacement STATECode   | Displaced 3TIMES Displacement LGACode   | Displaced 3TIMES Displacement Date   | Displaced 3TIMES More Displacement YesNo   | Displaced 3TIMES More Displacement  Percent   | Displaced 3TIMES More Displacement  STATECode   | Displaced 3TIMES More Displacement LGACode   | Displaced 3TIMES More Displacement Date   |
|:--------------------|------------:|:----------|:---------------|:--------------|:------------------------|:------------|:---------------|:-------------|:----------------|-----------------------------:|--------------------------:|-----------------------------------:|:------------------------------|:-----------------------------------|:------------------------------|:---------------------------------|:----------------------------|:------------------------------------------|:----------------------------------------------|:-----------------------------------------------------|:----------------------------------------------|:-------------------------------------------------------|:----------------------------------------------------|:-------------------------------------|:----------------------------------------------------------|:-------------------------------------------------------|:-------------------------------------------|:------------------------------------|:-------------------------------------|:-------------------------------------------|:-------------------------------------------|:------------------------------------------------------------|:-----------------------------------------|:--------------------------------------|:----------------------------|:-----------------------------|:-----------------------------------------------------|:-----------------------------------------------------|:---------------------------------------------------|:---------------------------------------------------|:--------------------------------------|:---------------------------|:-----------------------------|:--------------------------------------------|-------------------------------------------:|:--------------------------------------|:----------------------------------------|:------------------------------------------|:----------------------------------------|:-------------------------------------|:-----------------------------------------|:----------------------------------------|:------------------------------------------|:----------------------------------------|:-------------------------------------|:-------------------------------------------|:----------------------------------------------|:------------------------------------------------|:---------------------------------------------|:------------------------------------------|
| 2020-06-16 00:00:00 |          32 | Nigeria   | NG             | NG002         | ADAMAWA                 | NG002017    | SHELLENG       | NG002017008  | LIBBO           |                           51 |                       306 |                               2017 | Displaced by Communal Clashes | AD                                 | ADAMAWA                       | AD17                             | SHELLENG                    | No                                        |                                               |                                                      | yes                                           | 48                                                     | 288                                                 | Yes                                  | 3                                                         | 18                                                     | No                                         |                                     |                                      |                                            |                                            |                                                             |                                          |                                       |                             |                              |                                                      |                                                      |                                                    |                                                    |                                       |                            |                              | Yes                                         |                                        100 | No                                    |                                         |                                           |                                         |                                      | No                                       |                                         |                                           |                                         |                                      | No                                         |                                               |                                                 |                                              |                                           |
| 2020-06-16 00:00:00 |          32 | Nigeria   | NG             | NG035         | TARABA                  | NG035001    | ARDO - KOLA    | NG035001005  | LAMIDO BORNO    |                          123 |                       619 |                               2014 | Displaced by Insurgency       | BO                                 | BORNO                         | BO11                             | GWOZA                       | Yes                                       | 123                                           | 619                                                  | No                                            |                                                        |                                                     | No                                   |                                                           |                                                        | No                                         |                                     |                                      |                                            |                                            |                                                             |                                          |                                       |                             |                              |                                                      |                                                      |                                                    |                                                    |                                       |                            |                              | Yes                                         |                                        100 | No                                    |                                         |                                           |                                         |                                      | No                                       |                                         |                                           |                                         |                                      | No                                         |                                               |                                                 |                                              |                                           |
| 2020-06-16 00:00:00 |          32 | Nigeria   | NG             | NG005         | BAUCHI                  | NG005019    | WARJI          | NG005019010  | TUDUN WADA WEST |                           11 |                        61 |                               2014 | Displaced by Insurgency       | YB                                 | YOBE                          | YB14                             | POTISKUM                    | Yes                                       | 11                                            | 61                                                   | No                                            |                                                        |                                                     | No                                   |                                                           |                                                        | No                                         |                                     |                                      |                                            |                                            |                                                             |                                          |                                       |                             |                              |                                                      |                                                      |                                                    |                                                    |                                       |                            |                              | Yes                                         |                                         35 | Yes                                   | 65                                      | TR                                        | TR06                                    | 2)2015                               | No                                       |                                         |                                           |                                         |                                      | No                                         |                                               |                                                 |                                              |                                           |
| 2020-06-16 00:00:00 |          32 | Nigeria   | NG             | NG002         | ADAMAWA                 | NG002020    | YOLA NORTH     | NG002020005  | JAMBUTU         |                          843 |                      3819 |                               2014 | Displaced by Insurgency       | BO                                 | BORNO                         | BO11                             | GWOZA                       | Yes                                       | 768                                           | 3467                                                 | yes                                           | 32                                                     | 159                                                 | Yes                                  | 43                                                        | 193                                                    | No                                         |                                     |                                      |                                            |                                            |                                                             |                                          |                                       |                             |                              |                                                      |                                                      |                                                    |                                                    |                                       |                            |                              | Yes                                         |                                        100 | No                                    |                                         |                                           |                                         |                                      | No                                       |                                         |                                           |                                         |                                      | No                                         |                                               |                                                 |                                              |                                           |
| 2020-06-16 00:00:00 |          32 | Nigeria   | NG             | NG036         | YOBE                    | NG036007    | GUJBA          | NG036007010  | WAGIR           |                          278 |                      1946 |                               2016 | Displaced by Insurgency       | YB                                 | YOBE                          | YB07                             | GUJBA                       | Yes                                       | 278                                           | 1946                                                 | No                                            |                                                        |                                                     | No                                   |                                                           |                                                        | No                                         |                                     |                                      |                                            |                                            |                                                             |                                          |                                       |                             |                              |                                                      |                                                      |                                                    |                                                    |                                       |                            |                              | Yes                                         |                                        100 | No                                    |                                         |                                           |                                         |                                      | No                                       |                                         |                                           |                                         |                                      | No                                         |                                               |                                                 |                                              |                                           |
| 2020-06-16 00:00:00 |          32 | Nigeria   | NG             | NG002         | ADAMAWA                 | NG002009    | LAMURDE        | NG002009004  | LAMURDE         |                           58 |                       348 |                               2014 | Displaced by Insurgency       | AD                                 | ADAMAWA                       | AD10                             | MADAGALI                    | Yes                                       | 19                                            | 114                                                  | yes                                           | 39                                                     | 234                                                 | No                                   |                                                           |                                                        | No                                         |                                     |                                      |                                            |                                            |                                                             |                                          |                                       |                             |                              |                                                      |                                                      |                                                    |                                                    |                                       |                            |                              | Yes                                         |                                        100 | No                                    |                                         |                                           |                                         |                                      | No                                       |                                         |                                           |                                         |                                      | No                                         |                                               |                                                 |                                              |                                           |
| 2020-06-16 00:00:00 |          32 | Nigeria   | NG             | NG036         | YOBE                    | NG036006    | GEIDAM         | NG036006002  | KAWURI          |                          244 |                      1587 |                               2014 | Displaced by Insurgency       | BO                                 | BORNO                         | BO01                             | ABADAM                      | Yes                                       | 244                                           | 1587                                                 | No                                            |                                                        |                                                     | No                                   |                                                           |                                                        | Yes                                        | 97                                  | 631                                  | YB                                         | YOBE                                       | YB06                                                        | GEIDAM                                   | 2014-12-01 00:00:00                   | 22                          | 143                          | YB                                                   | YOBE                                                 | YB06                                               | GEIDAM                                             | 2019-10-01 00:00:00                   | 75                         | 488                          | Yes                                         |                                        100 | No                                    |                                         |                                           |                                         |                                      | No                                       |                                         |                                           |                                         |                                      | No                                         |                                               |                                                 |                                              |                                           |
| 2020-06-16 00:00:00 |          32 | Nigeria   | NG             | NG016         | GOMBE                   | NG016007    | KALTUNGO       | NG016007004  | KALTUNGO WEST   |                           72 |                       501 |                               2014 | Displaced by Insurgency       | AD                                 | ADAMAWA                       | AD13                             | MICHIKA                     | Yes                                       | 42                                            | 331                                                  | yes                                           | 30                                                     | 170                                                 | No                                   |                                                           |                                                        | No                                         |                                     |                                      |                                            |                                            |                                                             |                                          |                                       |                             |                              |                                                      |                                                      |                                                    |                                                    |                                       |                            |                              | Yes                                         |                                        100 | No                                    |                                         |                                           |                                         |                                      | No                                       |                                         |                                           |                                         |                                      | No                                         |                                               |                                                 |                                              |                                           |
| 2020-06-16 00:00:00 |          32 | Nigeria   | NG             | NG016         | GOMBE                   | NG016011    | YALMALTU/ DEBA | NG016011001  | DEBA            |                          134 |                       911 |                               2014 | Displaced by Insurgency       | BO                                 | BORNO                         | BO07                             | DAMBOA                      | Yes                                       | 122                                           | 815                                                  | yes                                           | 12                                                     | 96                                                  | No                                   |                                                           |                                                        | No                                         |                                     |                                      |                                            |                                            |                                                             |                                          |                                       |                             |                              |                                                      |                                                      |                                                    |                                                    |                                       |                            |                              | Yes                                         |                                        100 | No                                    |                                         |                                           |                                         |                                      | No                                       |                                         |                                           |                                         |                                      | No                                         |                                               |                                                 |                                              |                                           |
| 2020-06-16 00:00:00 |          32 | Nigeria   | NG             | NG008         | BORNO                   | NG008004    | BAYO           | NG008004002  | BRIYEL          |                           41 |                       266 |                               2014 | Displaced by Insurgency       | BO                                 | BORNO                         | BO07                             | DAMBOA                      | Yes                                       | 40                                            | 256                                                  | yes                                           | 1                                                      | 10                                                  | No                                   |                                                           |                                                        | No                                         |                                     |                                      |                                            |                                            |                                                             |                                          |                                       |                             |                              |                                                      |                                                      |                                                    |                                                    |                                       |                            |                              | Yes                                         |                                         75 | Yes                                   | 25                                      | BO                                        | BO21                                    | 1)Before 2015                        | No                                       |                                         |                                           |                                         |                                      | No                                         |                                               |                                                 |                                              |                                           |

TableB:
| State_Pcode   | State   | LGA Pcode   | LGA             | CODs_Ward_Pcode   | WARD            | SiteID   | Site Name      |   Longitude |   Latitude |   Number of Households |   Number of Individuals |
|:--------------|:--------|:------------|:----------------|:------------------|:----------------|:---------|:---------------|------------:|-----------:|-----------------------:|------------------------:|
| NG002         | ADAMAWA | NG002021    | YOLA SOUTH      | NG002021003       | BOLE YOLDE PATE | AD_H495  | JACCINGO       |     12.3473 |    9.12249 |                    122 |                     780 |
| NG016         | GOMBE   | NG016004    | DUKKU           | NG016004011       | ZAUNE           | GM_H064  | ANGUWAR FADA   |     10.8435 |   11.0512  |                     10 |                      40 |
| NG008         | BORNO   | NG008021    | MAIDUGURI M. C. | NG008021008       | GWANGE  III     | BO_H305  | BANA BOHMA     |     13.1755 |   11.8227  |                    243 |                    1414 |
| NG002         | ADAMAWA | NG002007    | HONG            | NG002007009       | MAYO LOPE       | AD_H156  | GWAMA          |     13.1679 |   10.2725  |                      1 |                       4 |
| NG002         | ADAMAWA | NG002004    | GIREI           | NG002004001       | DAKRI           | AD_H062  | DARKI          |     12.4721 |    9.33412 |                     34 |                     124 |
| NG016         | GOMBE   | NG016005    | FUNAKAYE        | NG016005002       | BAGE            | GM_H183  | JUGOL BORKONO  |     11.3036 |   10.5603  |                     26 |                     212 |
| NG036         | YOBE    | NG036014    | POTISKUM        | NG036014006       | DOGO NINI       | YB_H322  | DADIN KOWA     |     11.091  |   11.7237  |                     40 |                     258 |
| NG002         | ADAMAWA | NG002001    | DEMSA           | NG002001010       | NASSARAWO DEMSA | AD_H024  | NASARAWO DEMSA |     12.0479 |    9.44773 |                     34 |                     204 |
| NG002         | ADAMAWA | NG002015    | MUBI SOUTH      | NG002015004       | GUDE            | AD_H333  | GIDAN MADARA   |     13.2972 |   10.2559  |                     17 |                     114 |
| NG035         | TARABA  | NG035005    | GASSOL          | NG035005005       | NAM NAI         | TR_H068  | ANG. BUBA      |     10.9509 |    8.76694 |                     16 |                      82 |



source_headers: State Pcode
State of Displacement
LGA Pcode
LGA
CODs PCODE
WARD
Estimated Household Number
Estimated Number of IDP
target_headers: State_Pcode
State
LGA Pcode
LGA
CODs_Ward_Pcode
WARD
Number of Households
Number of Individuals
column_mappings: State Pcode
State_Pcode
State of Displacement
State
LGA Pcode
LGA Pcode
LGA
LGA
CODs PCODE
CODs_Ward_Pcode
WARD
WARD
Estimated Household Number
Number of Households
Estimated Number of IDP
Number of Individuals
output: {"column_mappings": [["Snapshot Date", null], ["DTM Round", null], ["Country", null], ["Country Code", null], ["State Pcode", "State_Pcode"], ["State of Displacement", "State"], ["LGA Pcode", "LGA Pcode"], ["LGA", "LGA"], ["CODs PCODE", "CODs_Ward_Pcode"], ["WARD", "WARD"], ["Estimated Household Number", "Number of Households"], ["Estimated Number of IDP", "Number of Individuals"], ["Year of Displacement of Majority", null], ["IDP category", null], ["State of Origin of Majority code", null], ["State of Origin of Majority", null], ["LGA of Origin of Majority code", null], ["LGA of Origin of Majority", null], ["Displacement Reason insurgency Yes / No", null], ["Displacement Reason insurg Household Number", null], ["Displacement Reason insurg Estimated Number of IDP", null], ["Displacement Reason Communal clash Yes / No", null], ["Displacement Reason clash Estimated Household Number", null], ["Displacement Reason clash Estimated Number of IDP", null], ["Displacement Reason disaster YesNo", null], ["Displacement Reason disaster Estimated Household Number", null], ["Displacement Reason disaster Estimated Number of IDP", null], ["IDPs from LGA displaced In Ward Yes / No", null], ["IDP HH from LGA displaced In Ward", null], ["IDP IND from LGA displaced In Ward", null], ["StateCode Previous State of Displacement", null], ["StateName Previous State of Displacement", null], ["LGACode Previous State of Displacement of largest group 1", null], ["LGAName Previous State of Displacement", null], ["Date of arrival largest IDP group 1", null], ["IDP HH of largest Group 1", null], ["IDP IND of largest Group 1", null], ["StateCode Previous displacement of Largest Group 2", null], ["StateName Previous displacement of Largest Group 2", null], ["LGACode Previous displacement of Largest Group 2", null], ["LGAName Previous displacement of Largest Group 2", null], ["Date of arrival largest IDP group 2", null], ["IDPHH of largest Group 2", null], ["IDP IND of largest Group 2", null], ["Displaced FirstTime Displacement Yes / No", null], ["Displaced FirstTime Displacement Percent", null], ["Displaced 2TIMES Displacement YesNo", null], ["Displaced 2TIMES Displacement Percent", null], ["Displaced 2TIMES Displacement STATECode", null], ["Displaced 2TIMES Displacement LGACode", null], ["Displaced 2TIMES Displacement Date", null], ["Displaced 3TIMES Displacement Yes / No", null], ["Displaced 3TIMES Displacement Percent", null], ["Displaced 3TIMES Displacement STATECode", null], ["Displaced 3TIMES Displacement LGACode", null], ["Displaced 3TIMES Displacement Date", null], ["Displaced 3TIMES More Displacement YesNo", null], ["Displaced 3TIMES More Displacement  Percent", null], ["Displaced 3TIMES More Displacement  STATECode", null], ["Displaced 3TIMES More Displacement LGACode", null], ["Displaced 3TIMES More Displacement Date", null]]}