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:
| PROVINCE        | DISTRICT   | SUB-DISTRICT       | ACCESS TO SITE                            |   GPS COORDINATES LATITUDE |   GPS COORDINATES LONGITUDE |   NO OF HOUSEHOLDS |   TOTAL INDIVIDUALS |
|:----------------|:-----------|:-------------------|:------------------------------------------|---------------------------:|----------------------------:|-------------------:|--------------------:|
| Sulawesi Tengah | DONGGALA   | SIRENJA            | YES                                       |                  -0.25862  |                     119.817 |                 52 |                 227 |
| Sulawesi Tengah | SIGI       | MARAWOLA BARAT     | LIMITED, NO ACCESS FOR FOUR WHEEL VEHICLE |                  -0.958292 |                     119.8   |                 10 |                  46 |
| Sulawesi Tengah | PALU       | PALU UTARA         | YES                                       |                  -0.758564 |                     119.865 |                 99 |                 300 |
| Sulawesi Tengah | PALU       | PALU SELATAN       | YES                                       |                  -0.912781 |                     119.884 |                 40 |                 148 |
| Sulawesi Tengah | SIGI       | SIGI BIROMARU      | YES                                       |                  -0.921701 |                     119.95  |                 10 |                  25 |
| Sulawesi Tengah | SIGI       | TANAMBULAVA        | NO, ONLY BY WALK                          |                  -1.16238  |                     119.918 |                 20 |                  79 |
| Sulawesi Tengah | DONGGALA   | SINDUE             | YES                                       |                  -0.59185  |                     119.795 |                 14 |                  43 |
| Sulawesi Tengah | SIGI       | SIGI BIROMARU      | YES                                       |                  -0.929181 |                     119.944 |                549 |                1871 |
| Sulawesi Tengah | SIGI       | KINOVARO           | YES                                       |                  -0.946456 |                     119.832 |                 23 |                  23 |
| Sulawesi Tengah | DONGGALA   | SINDUE TOMBUSABORA | LIMITED, NO ACCESS FOR FOUR WHEEL VEHICLE |                  -0.48462  |                     119.77  |                 50 |                 300 |

TableB:
| DISTRICT      | SUB-DISTRICT     |   LATITUDE |   LONGITUDE |   TOTAL IDPs |   TOTAL HOUSEHOLDS |
|:--------------|:-----------------|-----------:|------------:|-------------:|-------------------:|
| SUMBAWA       | ALAS BARAT       |   -8.53968 |     116.941 |           23 |                  7 |
| LOMBOK UTARA  | BAYAN            |   -8.25288 |     116.384 |           97 |                 30 |
| LOMBOK BARAT  | NARMADA          |   -8.5953  |     116.21  |           19 |                  5 |
| LOMBOK BARAT  | NARMADA          |   -8.59342 |     116.176 |           37 |                 10 |
| LOMBOK TIMUR  | SAMBELIA         |   -8.34326 |     116.694 |           36 |                  8 |
| LOMBOK TIMUR  | SAMBELIA         |   -8.34277 |     116.688 |           28 |                  6 |
| LOMBOK TIMUR  | SEMBALUN         |   -8.38309 |     116.539 |          441 |                220 |
| LOMBOK TENGAH | BATUKLIANG UTARA |   -8.57159 |     116.339 |          110 |                 40 |
| LOMBOK BARAT  | GUNUNG SARI      |   -8.5404  |     116.133 |          115 |                 28 |
| LOMBOK TENGAH | BATUKLIANG       |   -8.61271 |     116.316 |           16 |                  4 |



source_headers: DISTRICT
SUB-DISTRICT
GPS COORDINATES LATITUDE
GPS COORDINATES LONGITUDE
NO OF HOUSEHOLDS
TOTAL INDIVIDUALS
target_headers: DISTRICT
SUB-DISTRICT
LATITUDE
LONGITUDE
TOTAL HOUSEHOLDS
TOTAL IDPs
column_mappings: DISTRICT
DISTRICT
SUB-DISTRICT
SUB-DISTRICT
GPS COORDINATES LATITUDE
LATITUDE
GPS COORDINATES LONGITUDE
LONGITUDE
NO OF HOUSEHOLDS
TOTAL HOUSEHOLDS
TOTAL INDIVIDUALS
TOTAL IDPs
output: {"column_mappings": [["PROVINCE", null], ["DISTRICT", "DISTRICT"], ["SUB-DISTRICT", "SUB-DISTRICT"], ["ACCESS TO SITE", null], ["GPS COORDINATES LATITUDE", "LATITUDE"], ["GPS COORDINATES LONGITUDE", "LONGITUDE"], ["NO OF HOUSEHOLDS", "TOTAL HOUSEHOLDS"], ["TOTAL INDIVIDUALS", "TOTAL IDPs"]]}