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 | chembl_id    | assay_tissue   |    tid | assay_category   | description                                                                                 | relationship_type   | assay_tax_id   | assay_cell_type   | curated_by   | assay_strain   |   confidence_score | src_assay_id   | assay_type   | assay_organism   | cell_id   |   doc_id | assay_test_type   | assay_subcellular_fraction   |
|-----------:|:-------------|:---------------|-------:|:-----------------|:--------------------------------------------------------------------------------------------|:--------------------|:---------------|:------------------|:-------------|:---------------|-------------------:|:---------------|:-------------|:-----------------|:----------|---------:|:------------------|:-----------------------------|
|          1 | CHEMBo615q17 |                |  12052 |                  | Thecom0ougdwastesyedf8eth3inv8frounhlbitionifpla5elet12lipoxygsnasea5acogcentrationot30uj   | H                   |                |                   | Autockratlon |                |                  8 |                | B            |                  |           |    11087 |                   |                              |
|          2 | CgEnBL615118 |                |  22226 |                  | Comloujdsaaevaluatedvoritsagilutyyomobilizecalxi7min2321gIcells                             | U                   |                |                   | z7tocuration |                |                  0 |                | F            |                  |           |      684 |                   |                              |
|          3 | CHEMBLu25119 |                |  22226 |                  |                                                                                             | U                   |                |                   | Autocjrafion |                |                  0 |                | B            |                  |           |    15453 |                   |                              |
|          4 | dHEMBL615220 |                | 104729 |                  | BindimgaffinityagainstA2adenosij3geceotprimbobinesgriatslmembrwhesuzing3HCGq216io           | H                   | 21811.0        |                   | Aitovuration |                |                  4 |                | B            | Bosraurus        |           |    17841 |                   |                              |
|          5 | CHEjBL61512w |                |  80001 |                  | Invih3oc2oicytotozicityqgaknxt143BcelllinesH8manisteoaxrcomacellline                        | N                   | 28989.0        | 143B              | Inte3mediat2 |                |                  1 |                | F            | g9mosapiens      | 213.0     |    17430 |                   |                              |
|          6 | dHEMBL615112 |                |  80001 |                  | Imvitrocellxjtotox8cituzgainqt1t3ncekllinesHunanosteosqrc8macellline                        | N                   | 67618.0        | 143B              | Intermdeiate |                |                  1 |                | F            | Himosspiens      | 328.0     |    17430 |                   |                              |
|          7 | CbEMhL615123 |                |  80001 |                  | Cy4oyoxicActivitysasevaluatsdavainst142f4K6umorcellz                                        | N                   | 30923.0        | 143B              | 9nt2rmediate |                |                  1 |                | F            | Misnusculus      | 349.0     |    13799 |                   |                              |
|          8 | CyEMBL616124 |                |  80001 |                  | Invitroceikcyrotkx7city2zsret3rkinedagainat143Bcellline                                     | N                   | 69422.0        | 143B              | Exp4rt       |                |                  1 |                | F            | uomosapienw      | 282.0     |    17774 |                   |                              |
|          9 | fuEMBL615125 |                |  80001 |                  | obhibitotyactovityaga9nsytumorosteosa5comacwllkinew43nafter72h4continioueexoos6retkconpound | N                   | 27070.0        | 143B              | Int3rmediatd |                |                  1 |                | F            | Homisapiejs      | 443.0     |     3801 |                   |                              |
|         10 | CHEMBp61r126 |                |  80001 |                  | Ibgitrocellcyto6oxicityxvainst14rBpTKcflllineqecpressedinHSd1Tm                             | N                   | 25605.0        | 143B              | Intermeelate |                |                  1 |                | F            | Homksapienx      | 395.0     |    17430 |                   |                              |

TableB:
|   assay_id | chembl_id    | assay_tissue   |   tid | assay_category   | description                                                                                              | relationship_type   |   assay_tax_id | assay_cell_type   | curated_by   | assay_strain   |   confidence_score | src_assay_id   | assay_type   | assay_organism    | cell_id   |   src_id | bao_format   | tissue_id   | variant_id   |
|-----------:|:-------------|:---------------|------:|:-----------------|:---------------------------------------------------------------------------------------------------------|:--------------------|---------------:|:------------------|:-------------|:---------------|-------------------:|:---------------|:-------------|:------------------|:----------|---------:|:-------------|:------------|:-------------|
|       7524 | CHEMBL618647 | Kidney         | 50597 |                  | Biodistribution in normal rat kidney in the presence of 0.005 M Gd/0.01 M lig at 2 hr                    | N                   |          10116 |                   | Intermediate |                |                  1 |                | A            | Rattus norvegicus |           |        1 | BAO_0000218  | 2113.0      |              |
|       7525 | CHEMBL618648 | Kidney         | 50597 |                  | Biodistribution in normal rat kidney in the presence of 0.01 M Gd/0.05 M lig                             | N                   |          10116 |                   | Intermediate |                |                  1 |                | A            | Rattus norvegicus |           |        1 | BAO_0000218  | 2113.0      |              |
|       7526 | CHEMBL618649 | Kidney         | 50597 |                  | Biodistribution in normal rat kidney in the presence of NAC Gd 0.01 M lig at 2 hr                        | N                   |          10116 |                   | Intermediate |                |                  1 |                | A            | Rattus norvegicus |           |        1 | BAO_0000218  | 2113.0      |              |
|       7527 | CHEMBL618650 | Liver          | 50597 |                  | Biodistribution in normal rat liver in the presence of 0.005 M Gd/0.01 M lig at 2 hr                     | N                   |          10116 |                   | Intermediate |                |                  1 |                | A            | Rattus norvegicus |           |        1 | BAO_0000218  | 2107.0      |              |
|       7528 | CHEMBL618651 | Liver          | 50597 |                  | Biodistribution in normal rat liver in the presence of 0.01 M Gd/0.05 M lig                              | N                   |          10116 |                   | Intermediate |                |                  1 |                | A            | Rattus norvegicus |           |        1 | BAO_0000218  | 2107.0      |              |
|       7529 | CHEMBL876497 | Liver          | 50597 |                  | Biodistribution in normal rat liver in the presence of NAC Gd 0.01 M lig at 2 hr                         | N                   |          10116 |                   | Intermediate |                |                  1 |                | A            | Rattus norvegicus |           |        1 | BAO_0000218  | 2107.0      |              |
|       7530 | CHEMBL618652 | Lung           | 50597 |                  | Biodistribution in normal rat lung in the presence of 0.005 M Gd/0.01 M lig at 2 hr                      | N                   |          10116 |                   | Intermediate |                |                  1 |                | A            | Rattus norvegicus |           |        1 | BAO_0000218  | 2048.0      |              |
|       7531 | CHEMBL618653 | Lung           | 50597 |                  | Biodistribution in normal rat lung in the presence of 0.01 M Gd/0.05 M lig                               | N                   |          10116 |                   | Intermediate |                |                  1 |                | A            | Rattus norvegicus |           |        1 | BAO_0000218  | 2048.0      |              |
|       7532 | CHEMBL618654 | Lung           | 50597 |                  | Biodistribution in normal rat lung in the presence of NAC Gd 0.01 M lig at 2 hr                          | N                   |          10116 |                   | Intermediate |                |                  1 |                | A            | Rattus norvegicus |           |        1 | BAO_0000218  | 2048.0      |              |
|       7533 | CHEMBL618655 |                | 50597 |                  | Recovery rate from urine and bile was determined after iv administration at 20 mg/kg in rats; Not tested | N                   |          10116 |                   | Intermediate |                |                  1 |                | A            | Rattus norvegicus |           |        1 | BAO_0000218  |             |              |



source_headers: assay_id
chembl_id
assay_tissue
tid
assay_category
description
relationship_type
assay_tax_id
assay_cell_type
curated_by
assay_strain
confidence_score
src_assay_id
assay_type
assay_organism
cell_id
target_headers: assay_id
chembl_id
assay_tissue
tid
assay_category
description
relationship_type
assay_tax_id
assay_cell_type
curated_by
assay_strain
confidence_score
src_assay_id
assay_type
assay_organism
cell_id
column_mappings: assay_id
assay_id
chembl_id
chembl_id
assay_tissue
assay_tissue
tid
tid
assay_category
assay_category
description
description
relationship_type
relationship_type
assay_tax_id
assay_tax_id
assay_cell_type
assay_cell_type
curated_by
curated_by
assay_strain
assay_strain
confidence_score
confidence_score
src_assay_id
src_assay_id
assay_type
assay_type
assay_organism
assay_organism
cell_id
cell_id
output: {"column_mappings": [["assay_id", "assay_id"], ["chembl_id", "chembl_id"], ["assay_tissue", "assay_tissue"], ["tid", "tid"], ["assay_category", "assay_category"], ["description", "description"], ["relationship_type", "relationship_type"], ["assay_tax_id", "assay_tax_id"], ["assay_cell_type", "assay_cell_type"], ["curated_by", "curated_by"], ["assay_strain", "assay_strain"], ["confidence_score", "confidence_score"], ["src_assay_id", "src_assay_id"], ["assay_type", "assay_type"], ["assay_organism", "assay_organism"], ["cell_id", "cell_id"], ["doc_id", null], ["assay_test_type", null], ["assay_subcellular_fraction", null]]}