Task: Schema-Matching (source dataset: assays)

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:
|   assay_id | assay_organism   | curated_by   | chembl_id    | cell_id   | assay_category   |    tid | tissue_id   | assay_type   | variant_id   | description                                                                                 |   doc_id | assay_test_type   | assay_tax_id   | assay_strain   | assay_tissue   | assay_cell_type   |
|-----------:|:-----------------|:-------------|:-------------|:----------|:-----------------|-------:|:------------|:-------------|:-------------|:--------------------------------------------------------------------------------------------|---------:|:------------------|:---------------|:---------------|:---------------|:------------------|
|          1 |                  | Auy8curation | CHEMBLyw5117 |           |                  |  12052 |             | B            |              | Thecom9oujswasteegeffkfgheinvitroinhibitiomofpkatelet12liplxygenasea5acobcent4zrionof30uM   |    11087 |                   |                |                |                |                   |
|          2 |                  | wutkcuration | CHEMBL61611u |           |                  |  22226 |             | F            |              | Compoundwxsevaouatesfkri6sav8litytomobiliaecalviuhin1e22NIcells                             |      684 |                   |                |                |                |                   |
|          3 |                  | Autosurqtion | CmEMBL625119 |           |                  |  22226 |             | B            |              |                                                                                             |    15453 |                   |                |                |                |                   |
|          4 | Bosta6rus        | Autodura5ion | CHEMBL61513p |           |                  | 104729 |             | B            |              | BinwingacfuhityagaunqtA2aeenosineteceptorinb9vinestrua5almembdanesusinteHCnS2w680           |    17841 |                   | 9913.0         |                |                |                   |
|          5 | Hom9sa0iens      | Intermddia6e | CH2MBi615121 | 324.0     |                  |  80001 |             | F            |              | Ijviteocelkvytotoxifityagainstw43BcelolinesH8jsnosteosarcomwcepllind                        |    17430 |                   | 9606.0         |                |                | 143B              |
|          6 | Homosapifne      | Interm2diqte | CgrMBL615122 | 500.0     |                  |  80001 |             | F            |              | 7nvitrocellcytoyoxicityagainxt143nc3llpinesHujabosteosxrdomwsellkine                        |    17430 |                   | 9606.0         |                |                | 143B              |
|          7 | Musmusxulue      | Iht2rmediate | CHEnBL61y123 | 558.0     |                  |  80001 |             | F            |              | dytotoxicActivkttwasegxluatedwgainst143hTjtumorceops                                        |    13799 |                   | 10090.0        |                |                | 143B              |
|          8 | Homozapiehs      | sxpert       | CHEMBL615qq4 | 425.0     |                  |  80001 |             | F            |              | ongitrocellcyt9toxicitywaswrterninedwgainst1t3Bcelklih3                                     |    17774 |                   | 9606.0         |                |                | 143B              |
|          9 | Himoszpiens      | Intermdxiate | CgEMBL6151e5 | 161.0     |                  |  80001 |             | F            |              | ujhobktoryacticityagainshtujorixteosarcojxc3llline14eBafter72urc9ntinuousesposuretockmpougd |     3801 |                   | 9606.0         |                |                | 143B              |
|         10 | Hom8qapiens      | Intdrmediatf | CH3MBL6q5126 | 448.0     |                  |  80001 |             | F            |              | 9nvitrlcellcyt8toxicityabaibstq43BLTKcelllig2sex0g3sssdinHSV1TK                             |    17430 |                   | 9606.0         |                |                | 143B              |

TableB:
|   ASSI | ASSORGA           | CUB          | CHEI         | CI   | ASSCA   |     T | TII    | ASSTY   | VAI   | Descri                                                                                                   | ASSSUBCEFR   | RELT   |   CONFSCO |   SI | SRASSI   | BAFO        |
|-------:|:------------------|:-------------|:-------------|:-----|:--------|------:|:-------|:--------|:------|:---------------------------------------------------------------------------------------------------------|:-------------|:-------|----------:|-----:|:---------|:------------|
|   7524 | Rattus norvegicus | Intermediate | CHEMBL618647 |      |         | 50597 | 2113.0 | A       |       | Biodistribution in normal rat kidney in the presence of 0.005 M Gd/0.01 M lig at 2 hr                    |              | N      |         1 |    1 |          | BAO_0000218 |
|   7525 | Rattus norvegicus | Intermediate | CHEMBL618648 |      |         | 50597 | 2113.0 | A       |       | Biodistribution in normal rat kidney in the presence of 0.01 M Gd/0.05 M lig                             |              | N      |         1 |    1 |          | BAO_0000218 |
|   7526 | Rattus norvegicus | Intermediate | CHEMBL618649 |      |         | 50597 | 2113.0 | A       |       | Biodistribution in normal rat kidney in the presence of NAC Gd 0.01 M lig at 2 hr                        |              | N      |         1 |    1 |          | BAO_0000218 |
|   7527 | Rattus norvegicus | Intermediate | CHEMBL618650 |      |         | 50597 | 2107.0 | A       |       | Biodistribution in normal rat liver in the presence of 0.005 M Gd/0.01 M lig at 2 hr                     |              | N      |         1 |    1 |          | BAO_0000218 |
|   7528 | Rattus norvegicus | Intermediate | CHEMBL618651 |      |         | 50597 | 2107.0 | A       |       | Biodistribution in normal rat liver in the presence of 0.01 M Gd/0.05 M lig                              |              | N      |         1 |    1 |          | BAO_0000218 |
|   7529 | Rattus norvegicus | Intermediate | CHEMBL876497 |      |         | 50597 | 2107.0 | A       |       | Biodistribution in normal rat liver in the presence of NAC Gd 0.01 M lig at 2 hr                         |              | N      |         1 |    1 |          | BAO_0000218 |
|   7530 | Rattus norvegicus | Intermediate | CHEMBL618652 |      |         | 50597 | 2048.0 | A       |       | Biodistribution in normal rat lung in the presence of 0.005 M Gd/0.01 M lig at 2 hr                      |              | N      |         1 |    1 |          | BAO_0000218 |
|   7531 | Rattus norvegicus | Intermediate | CHEMBL618653 |      |         | 50597 | 2048.0 | A       |       | Biodistribution in normal rat lung in the presence of 0.01 M Gd/0.05 M lig                               |              | N      |         1 |    1 |          | BAO_0000218 |
|   7532 | Rattus norvegicus | Intermediate | CHEMBL618654 |      |         | 50597 | 2048.0 | A       |       | Biodistribution in normal rat lung in the presence of NAC Gd 0.01 M lig at 2 hr                          |              | N      |         1 |    1 |          | BAO_0000218 |
|   7533 | Rattus norvegicus | Intermediate | CHEMBL618655 |      |         | 50597 |        | A       |       | Recovery rate from urine and bile was determined after iv administration at 20 mg/kg in rats; Not tested |              | N      |         1 |    1 |          | BAO_0000218 |



source_headers: assay_id
assay_organism
curated_by
chembl_id
cell_id
assay_category
tid
tissue_id
assay_type
variant_id
description
target_headers: ASSI
ASSORGA
CUB
CHEI
CI
ASSCA
T
TII
ASSTY
VAI
Descri
column_mappings: assay_id
ASSI
assay_organism
ASSORGA
curated_by
CUB
chembl_id
CHEI
cell_id
CI
assay_category
ASSCA
tid
T
tissue_id
TII
assay_type
ASSTY
variant_id
VAI
description
Descri
output: {"column_mappings": [["assay_id", "ASSI"], ["assay_organism", "ASSORGA"], ["curated_by", "CUB"], ["chembl_id", "CHEI"], ["cell_id", "CI"], ["assay_category", "ASSCA"], ["tid", "T"], ["tissue_id", "TII"], ["assay_type", "ASSTY"], ["variant_id", "VAI"], ["description", "Descri"], ["doc_id", null], ["assay_test_type", null], ["assay_tax_id", null], ["assay_strain", null], ["assay_tissue", null], ["assay_cell_type", null]]}