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

TableB:
|   assay_id | assay_test_type   | assay_organism    | assay_category   | assay_type   | relationship_type   | curated_by   | assay_tissue   |   assay_tax_id | description                                                                                              |   tid | variant_id   | src_assay_id   |   src_id |   doc_id | bao_format   |   confidence_score | chembl_id    | cell_id   | tissue_id   |
|-----------:|:------------------|:------------------|:-----------------|:-------------|:--------------------|:-------------|:---------------|---------------:|:---------------------------------------------------------------------------------------------------------|------:|:-------------|:---------------|---------:|---------:|:-------------|-------------------:|:-------------|:----------|:------------|
|       7524 | In vivo           | Rattus norvegicus |                  | A            | N                   | Intermediate | Kidney         |          10116 | Biodistribution in normal rat kidney in the presence of 0.005 M Gd/0.01 M lig at 2 hr                    | 50597 |              |                |        1 |     9866 | BAO_0000218  |                  1 | CHEMBL618647 |           | 2113.0      |
|       7525 | In vivo           | Rattus norvegicus |                  | A            | N                   | Intermediate | Kidney         |          10116 | Biodistribution in normal rat kidney in the presence of 0.01 M Gd/0.05 M lig                             | 50597 |              |                |        1 |     9866 | BAO_0000218  |                  1 | CHEMBL618648 |           | 2113.0      |
|       7526 | In vivo           | Rattus norvegicus |                  | A            | N                   | Intermediate | Kidney         |          10116 | Biodistribution in normal rat kidney in the presence of NAC Gd 0.01 M lig at 2 hr                        | 50597 |              |                |        1 |     9866 | BAO_0000218  |                  1 | CHEMBL618649 |           | 2113.0      |
|       7527 | In vivo           | Rattus norvegicus |                  | A            | N                   | Intermediate | Liver          |          10116 | Biodistribution in normal rat liver in the presence of 0.005 M Gd/0.01 M lig at 2 hr                     | 50597 |              |                |        1 |     9866 | BAO_0000218  |                  1 | CHEMBL618650 |           | 2107.0      |
|       7528 | In vivo           | Rattus norvegicus |                  | A            | N                   | Intermediate | Liver          |          10116 | Biodistribution in normal rat liver in the presence of 0.01 M Gd/0.05 M lig                              | 50597 |              |                |        1 |     9866 | BAO_0000218  |                  1 | CHEMBL618651 |           | 2107.0      |
|       7529 | In vivo           | Rattus norvegicus |                  | A            | N                   | Intermediate | Liver          |          10116 | Biodistribution in normal rat liver in the presence of NAC Gd 0.01 M lig at 2 hr                         | 50597 |              |                |        1 |     9866 | BAO_0000218  |                  1 | CHEMBL876497 |           | 2107.0      |
|       7530 | In vivo           | Rattus norvegicus |                  | A            | N                   | Intermediate | Lung           |          10116 | Biodistribution in normal rat lung in the presence of 0.005 M Gd/0.01 M lig at 2 hr                      | 50597 |              |                |        1 |     9866 | BAO_0000218  |                  1 | CHEMBL618652 |           | 2048.0      |
|       7531 | In vivo           | Rattus norvegicus |                  | A            | N                   | Intermediate | Lung           |          10116 | Biodistribution in normal rat lung in the presence of 0.01 M Gd/0.05 M lig                               | 50597 |              |                |        1 |     9866 | BAO_0000218  |                  1 | CHEMBL618653 |           | 2048.0      |
|       7532 | In vivo           | Rattus norvegicus |                  | A            | N                   | Intermediate | Lung           |          10116 | Biodistribution in normal rat lung in the presence of NAC Gd 0.01 M lig at 2 hr                          | 50597 |              |                |        1 |     9866 | BAO_0000218  |                  1 | CHEMBL618654 |           | 2048.0      |
|       7533 |                   | Rattus norvegicus |                  | A            | N                   | Intermediate |                |          10116 | Recovery rate from urine and bile was determined after iv administration at 20 mg/kg in rats; Not tested | 50597 |              |                |        1 |     6351 | BAO_0000218  |                  1 | CHEMBL618655 |           |             |



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