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_test_type   | tissue_id   |    tid | assay_tax_id   | curated_by   |   src_id | assay_tissue   | assay_type   | cell_id   | description                                                                                                 | assay_subcellular_fraction   | assay_category   | bao_format   | relationship_type   | assay_strain   |   doc_id | assay_organism   | assay_cell_type   |
|-----------:|:------------------|:------------|-------:|:---------------|:-------------|---------:|:---------------|:-------------|:----------|:------------------------------------------------------------------------------------------------------------|:-----------------------------|:-----------------|:-------------|:--------------------|:---------------|---------:|:-----------------|:------------------|
|          1 |                   |             |  12052 |                | Autocuration |        1 |                | B            |           | The compound was tested for the in vitro inhibition of platelet 12-lipoxygenase at a concentration of 30 uM |                              |                  | BAO_0000019  | H                   |                |    11087 |                  |                   |
|          2 |                   |             |  22226 |                | Autocuration |        1 |                | F            |           | Compound was evaluated for its ability to mobilize calcium in 1321NI cells                                  |                              |                  | BAO_0000219  | U                   |                |      684 |                  |                   |
|          3 |                   |             |  22226 |                | Autocuration |        1 |                | B            |           |                                                                                                             |                              |                  | BAO_0000019  | U                   |                |    15453 |                  |                   |
|          4 |                   |             | 104729 | 9913.0         | Autocuration |        1 |                | B            |           | Binding affinity against A2 adenosine receptor in bovine striatal membranes using [3H]CGS-21680             |                              |                  | BAO_0000249  | H                   |                |    17841 | Bos taurus       |                   |
|          5 |                   |             |  80001 | 9606.0         | Intermediate |        1 |                | F            | 163.0     | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          |                              |                  | BAO_0000219  | N                   |                |    17430 | Homo sapiens     | 143B              |
|          6 |                   |             |  80001 | 9606.0         | Intermediate |        1 |                | F            | 163.0     | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          |                              |                  | BAO_0000219  | N                   |                |    17430 | Homo sapiens     | 143B              |
|          7 |                   |             |  80001 | 10090.0        | Intermediate |        1 |                | F            | 163.0     | Cytotoxic Activity was evaluated against 143B (TK-) tumor cells                                             |                              |                  | BAO_0000219  | N                   |                |    13799 | Mus musculus     | 143B              |
|          8 |                   |             |  80001 | 9606.0         | Expert       |        1 |                | F            | 163.0     | In vitro cell cytotoxicity was determined against 143B cell line                                            |                              |                  | BAO_0000219  | N                   |                |    17774 | Homo sapiens     | 143B              |
|          9 |                   |             |  80001 | 9606.0         | Intermediate |        1 |                | F            | 163.0     | Inhibitory activity against tumor osteosarcoma cell line 143B after 72 hr continuous exposure to compound   |                              |                  | BAO_0000219  | N                   |                |     3801 | Homo sapiens     | 143B              |
|         10 |                   |             |  80001 | 9606.0         | Intermediate |        1 |                | F            | 163.0     | In vitro cell cytotoxicity against 143B-LTK cell lines expressed in HSV-1 TK                                |                              |                  | BAO_0000219  | N                   |                |    17430 | Homo sapiens     | 143B              |

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



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