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 |   doc_id |   confidence_score | assay_strain   | cell_id   | assay_category   | curated_by   | tissue_id   | assay_cell_type   | assay_tissue   | assay_tax_id   | description                                                                                                 | assay_type   | assay_test_type   | assay_organism   | assay_subcellular_fraction   |    tid |
|-----------:|---------:|-------------------:|:---------------|:----------|:-----------------|:-------------|:------------|:------------------|:---------------|:---------------|:------------------------------------------------------------------------------------------------------------|:-------------|:------------------|:-----------------|:-----------------------------|-------:|
|          1 |    11087 |                  8 |                |           |                  | Autocuration |             |                   |                |                | The compound was tested for the in vitro inhibition of platelet 12-lipoxygenase at a concentration of 30 uM | B            |                   |                  |                              |  12052 |
|          2 |      684 |                  0 |                |           |                  | Autocuration |             |                   |                |                | Compound was evaluated for its ability to mobilize calcium in 1321NI cells                                  | F            |                   |                  |                              |  22226 |
|          3 |    15453 |                  0 |                |           |                  | Autocuration |             |                   |                |                |                                                                                                             | B            |                   |                  |                              |  22226 |
|          4 |    17841 |                  4 |                |           |                  | Autocuration |             |                   |                | 9913.0         | Binding affinity against A2 adenosine receptor in bovine striatal membranes using [3H]CGS-21680             | B            |                   | Bos taurus       |                              | 104729 |
|          5 |    17430 |                  1 |                | 163.0     |                  | Intermediate |             | 143B              |                | 9606.0         | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          | F            |                   | Homo sapiens     |                              |  80001 |
|          6 |    17430 |                  1 |                | 163.0     |                  | Intermediate |             | 143B              |                | 9606.0         | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          | F            |                   | Homo sapiens     |                              |  80001 |
|          7 |    13799 |                  1 |                | 163.0     |                  | Intermediate |             | 143B              |                | 10090.0        | Cytotoxic Activity was evaluated against 143B (TK-) tumor cells                                             | F            |                   | Mus musculus     |                              |  80001 |
|          8 |    17774 |                  1 |                | 163.0     |                  | Expert       |             | 143B              |                | 9606.0         | In vitro cell cytotoxicity was determined against 143B cell line                                            | F            |                   | Homo sapiens     |                              |  80001 |
|          9 |     3801 |                  1 |                | 163.0     |                  | Intermediate |             | 143B              |                | 9606.0         | Inhibitory activity against tumor osteosarcoma cell line 143B after 72 hr continuous exposure to compound   | F            |                   | Homo sapiens     |                              |  80001 |
|         10 |    17430 |                  1 |                | 163.0     |                  | Intermediate |             | 143B              |                | 9606.0         | In vitro cell cytotoxicity against 143B-LTK cell lines expressed in HSV-1 TK                                | F            |                   | Homo sapiens     |                              |  80001 |

TableB:
|   assay_id |   doc_id |   confidence_score | assay_strain   | cell_id   | assay_category   | curated_by   | tissue_id   | assay_cell_type   | assay_tissue   |   assay_tax_id | relationship_type   |   src_id | src_assay_id   | chembl_id    | bao_format   | variant_id   |
|-----------:|---------:|-------------------:|:---------------|:----------|:-----------------|:-------------|:------------|:------------------|:---------------|---------------:|:--------------------|---------:|:---------------|:-------------|:-------------|:-------------|
|       7524 |     9866 |                  1 |                |           |                  | Intermediate | 2113.0      |                   | Kidney         |          10116 | N                   |        1 |                | CHEMBL618647 | BAO_0000218  |              |
|       7525 |     9866 |                  1 |                |           |                  | Intermediate | 2113.0      |                   | Kidney         |          10116 | N                   |        1 |                | CHEMBL618648 | BAO_0000218  |              |
|       7526 |     9866 |                  1 |                |           |                  | Intermediate | 2113.0      |                   | Kidney         |          10116 | N                   |        1 |                | CHEMBL618649 | BAO_0000218  |              |
|       7527 |     9866 |                  1 |                |           |                  | Intermediate | 2107.0      |                   | Liver          |          10116 | N                   |        1 |                | CHEMBL618650 | BAO_0000218  |              |
|       7528 |     9866 |                  1 |                |           |                  | Intermediate | 2107.0      |                   | Liver          |          10116 | N                   |        1 |                | CHEMBL618651 | BAO_0000218  |              |
|       7529 |     9866 |                  1 |                |           |                  | Intermediate | 2107.0      |                   | Liver          |          10116 | N                   |        1 |                | CHEMBL876497 | BAO_0000218  |              |
|       7530 |     9866 |                  1 |                |           |                  | Intermediate | 2048.0      |                   | Lung           |          10116 | N                   |        1 |                | CHEMBL618652 | BAO_0000218  |              |
|       7531 |     9866 |                  1 |                |           |                  | Intermediate | 2048.0      |                   | Lung           |          10116 | N                   |        1 |                | CHEMBL618653 | BAO_0000218  |              |
|       7532 |     9866 |                  1 |                |           |                  | Intermediate | 2048.0      |                   | Lung           |          10116 | N                   |        1 |                | CHEMBL618654 | BAO_0000218  |              |
|       7533 |     6351 |                  1 |                |           |                  | Intermediate |             |                   |                |          10116 | N                   |        1 |                | CHEMBL618655 | BAO_0000218  |              |



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