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 | variant_id   |   src_id | assay_cell_type   | bao_format   | tissue_id   |   doc_id | description                                                                                                 | assay_type   | assay_test_type   | assay_category   | assay_organism   | assay_tax_id   | assay_strain   |
|-----------:|:-------------|---------:|:------------------|:-------------|:------------|---------:|:------------------------------------------------------------------------------------------------------------|:-------------|:------------------|:-----------------|:-----------------|:---------------|:---------------|
|          1 |              |        1 |                   | vAO0000p19   |             |    11087 | The compound was tested for the in vitro inhibition of platelet 12-lipoxygenase at a concentration of 30 uM | B            |                   |                  |                  |                |                |
|          2 |              |        1 |                   | BsO00002w9   |             |      684 | Compound was evaluated for its ability to mobilize calcium in 1321NI cells                                  | F            |                   |                  |                  |                |                |
|          3 |              |        1 |                   | BsO00p0019   |             |    15453 |                                                                                                             | B            |                   |                  |                  |                |                |
|          4 |              |        1 |                   | vAO00o0249   |             |    17841 | Binding affinity against A2 adenosine receptor in bovine striatal membranes using [3H]CGS-21680             | B            |                   |                  | Bos taurus       | 9913.0         |                |
|          5 |              |        1 | 143B              | BAO0000w18   |             |    17430 | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          | F            |                   |                  | Homo sapiens     | 9606.0         |                |
|          6 |              |        1 | 143B              | BwO00002q9   |             |    17430 | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          | F            |                   |                  | Homo sapiens     | 9606.0         |                |
|          7 |              |        1 | 143B              | nAO0p00219   |             |    13799 | Cytotoxic Activity was evaluated against 143B (TK-) tumor cells                                             | F            |                   |                  | Mus musculus     | 10090.0        |                |
|          8 |              |        1 | 143B              | BAO900o219   |             |    17774 | In vitro cell cytotoxicity was determined against 143B cell line                                            | F            |                   |                  | Homo sapiens     | 9606.0         |                |
|          9 |              |        1 | 143B              | BAOp000119   |             |     3801 | Inhibitory activity against tumor osteosarcoma cell line 143B after 72 hr continuous exposure to compound   | F            |                   |                  | Homo sapiens     | 9606.0         |                |
|         10 |              |        1 | 143B              | BAO0p00229   |             |    17430 | In vitro cell cytotoxicity against 143B-LTK cell lines expressed in HSV-1 TK                                | F            |                   |                  | Homo sapiens     | 9606.0         |                |

TableB:
|   assays_ASI | assays_VARI   |   assays_SRI | assays_ASSCTY   | assays_BFO   | assays_TII   | assays_ASSTIS   | assays_ASSUBFR   |   assays_T | assays_RELT   |   assays_CONFISC | assays_CURAB   | assays_SASI   | assays_CHEI   | assays_CI   |
|-------------:|:--------------|-------------:|:----------------|:-------------|:-------------|:----------------|:-----------------|-----------:|:--------------|-----------------:|:---------------|:--------------|:--------------|:------------|
|         7524 |               |            1 |                 | BAO_0000218  | 2113.0       | Kidney          |                  |      50597 | N             |                1 | Intermediate   |               | CHEMBL618647  |             |
|         7525 |               |            1 |                 | BAO_0000218  | 2113.0       | Kidney          |                  |      50597 | N             |                1 | Intermediate   |               | CHEMBL618648  |             |
|         7526 |               |            1 |                 | BAO_0000218  | 2113.0       | Kidney          |                  |      50597 | N             |                1 | Intermediate   |               | CHEMBL618649  |             |
|         7527 |               |            1 |                 | BAO_0000218  | 2107.0       | Liver           |                  |      50597 | N             |                1 | Intermediate   |               | CHEMBL618650  |             |
|         7528 |               |            1 |                 | BAO_0000218  | 2107.0       | Liver           |                  |      50597 | N             |                1 | Intermediate   |               | CHEMBL618651  |             |
|         7529 |               |            1 |                 | BAO_0000218  | 2107.0       | Liver           |                  |      50597 | N             |                1 | Intermediate   |               | CHEMBL876497  |             |
|         7530 |               |            1 |                 | BAO_0000218  | 2048.0       | Lung            |                  |      50597 | N             |                1 | Intermediate   |               | CHEMBL618652  |             |
|         7531 |               |            1 |                 | BAO_0000218  | 2048.0       | Lung            |                  |      50597 | N             |                1 | Intermediate   |               | CHEMBL618653  |             |
|         7532 |               |            1 |                 | BAO_0000218  | 2048.0       | Lung            |                  |      50597 | N             |                1 | Intermediate   |               | CHEMBL618654  |             |
|         7533 |               |            1 |                 | BAO_0000218  |              |                 |                  |      50597 | N             |                1 | Intermediate   |               | CHEMBL618655  |             |



source_headers: assay_id
variant_id
src_id
assay_cell_type
bao_format
tissue_id
target_headers: assays_ASI
assays_VARI
assays_SRI
assays_ASSCTY
assays_BFO
assays_TII
column_mappings: assay_id
assays_ASI
variant_id
assays_VARI
src_id
assays_SRI
assay_cell_type
assays_ASSCTY
bao_format
assays_BFO
tissue_id
assays_TII
output: {"column_mappings": [["assay_id", "assays_ASI"], ["variant_id", "assays_VARI"], ["src_id", "assays_SRI"], ["assay_cell_type", "assays_ASSCTY"], ["bao_format", "assays_BFO"], ["tissue_id", "assays_TII"], ["doc_id", null], ["description", null], ["assay_type", null], ["assay_test_type", null], ["assay_category", null], ["assay_organism", null], ["assay_tax_id", null], ["assay_strain", null]]}