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 | src_assay_id   | description                                                                                                 | assay_category   | bao_format   | chembl_id    |   doc_id | assay_tax_id   | curated_by   |   src_id | cell_id   | assay_type   | assay_test_type   | assay_organism   | assay_strain   | assay_tissue   | assay_cell_type   |
|-----------:|:---------------|:------------------------------------------------------------------------------------------------------------|:-----------------|:-------------|:-------------|---------:|:---------------|:-------------|---------:|:----------|:-------------|:------------------|:-----------------|:---------------|:---------------|:------------------|
|          1 |                | The compound was tested for the in vitro inhibition of platelet 12-lipoxygenase at a concentration of 30 uM |                  | BAO_0000019  | CHEMBL615117 |    11087 |                | Autocuration |        1 |           | B            |                   |                  |                |                |                   |
|          2 |                | Compound was evaluated for its ability to mobilize calcium in 1321NI cells                                  |                  | BAO_0000219  | CHEMBL615118 |      684 |                | Autocuration |        1 |           | F            |                   |                  |                |                |                   |
|          3 |                |                                                                                                             |                  | BAO_0000019  | CHEMBL615119 |    15453 |                | Autocuration |        1 |           | B            |                   |                  |                |                |                   |
|          4 |                | Binding affinity against A2 adenosine receptor in bovine striatal membranes using [3H]CGS-21680             |                  | BAO_0000249  | CHEMBL615120 |    17841 | 9913.0         | Autocuration |        1 |           | B            |                   | Bos taurus       |                |                |                   |
|          5 |                | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          |                  | BAO_0000219  | CHEMBL615121 |    17430 | 9606.0         | Intermediate |        1 | 163.0     | F            |                   | Homo sapiens     |                |                | 143B              |
|          6 |                | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          |                  | BAO_0000219  | CHEMBL615122 |    17430 | 9606.0         | Intermediate |        1 | 163.0     | F            |                   | Homo sapiens     |                |                | 143B              |
|          7 |                | Cytotoxic Activity was evaluated against 143B (TK-) tumor cells                                             |                  | BAO_0000219  | CHEMBL615123 |    13799 | 10090.0        | Intermediate |        1 | 163.0     | F            |                   | Mus musculus     |                |                | 143B              |
|          8 |                | In vitro cell cytotoxicity was determined against 143B cell line                                            |                  | BAO_0000219  | CHEMBL615124 |    17774 | 9606.0         | Expert       |        1 | 163.0     | F            |                   | Homo sapiens     |                |                | 143B              |
|          9 |                | Inhibitory activity against tumor osteosarcoma cell line 143B after 72 hr continuous exposure to compound   |                  | BAO_0000219  | CHEMBL615125 |     3801 | 9606.0         | Intermediate |        1 | 163.0     | F            |                   | Homo sapiens     |                |                | 143B              |
|         10 |                | In vitro cell cytotoxicity against 143B-LTK cell lines expressed in HSV-1 TK                                |                  | BAO_0000219  | CHEMBL615126 |    17430 | 9606.0         | Intermediate |        1 | 163.0     | F            |                   | Homo sapiens     |                |                | 143B              |

TableB:
|   assays_ASI | assays_SRASSI   | assays_Descri                                                                                            | assays_ASSCA   | assays_BAFO   | assays_CHEI   |   assays_DOI |   assays_ASSTI | assays_CURB   |   assays_SRI | assays_CI   | assays_ASSUBCEFR   |   assays_Ti | assays_RELATY   |   assays_CONFSCO | assays_TISI   | assays_VARII   |
|-------------:|:----------------|:---------------------------------------------------------------------------------------------------------|:---------------|:--------------|:--------------|-------------:|---------------:|:--------------|-------------:|:------------|:-------------------|------------:|:----------------|-----------------:|:--------------|:---------------|
|         7524 |                 | Biodistribution in normal rat kidney in the presence of 0.005 M Gd/0.01 M lig at 2 hr                    |                | BAO_0000218   | CHEMBL618647  |         9866 |          10116 | Intermediate  |            1 |             |                    |       50597 | N               |                1 | 2113.0        |                |
|         7525 |                 | Biodistribution in normal rat kidney in the presence of 0.01 M Gd/0.05 M lig                             |                | BAO_0000218   | CHEMBL618648  |         9866 |          10116 | Intermediate  |            1 |             |                    |       50597 | N               |                1 | 2113.0        |                |
|         7526 |                 | Biodistribution in normal rat kidney in the presence of NAC Gd 0.01 M lig at 2 hr                        |                | BAO_0000218   | CHEMBL618649  |         9866 |          10116 | Intermediate  |            1 |             |                    |       50597 | N               |                1 | 2113.0        |                |
|         7527 |                 | Biodistribution in normal rat liver in the presence of 0.005 M Gd/0.01 M lig at 2 hr                     |                | BAO_0000218   | CHEMBL618650  |         9866 |          10116 | Intermediate  |            1 |             |                    |       50597 | N               |                1 | 2107.0        |                |
|         7528 |                 | Biodistribution in normal rat liver in the presence of 0.01 M Gd/0.05 M lig                              |                | BAO_0000218   | CHEMBL618651  |         9866 |          10116 | Intermediate  |            1 |             |                    |       50597 | N               |                1 | 2107.0        |                |
|         7529 |                 | Biodistribution in normal rat liver in the presence of NAC Gd 0.01 M lig at 2 hr                         |                | BAO_0000218   | CHEMBL876497  |         9866 |          10116 | Intermediate  |            1 |             |                    |       50597 | N               |                1 | 2107.0        |                |
|         7530 |                 | Biodistribution in normal rat lung in the presence of 0.005 M Gd/0.01 M lig at 2 hr                      |                | BAO_0000218   | CHEMBL618652  |         9866 |          10116 | Intermediate  |            1 |             |                    |       50597 | N               |                1 | 2048.0        |                |
|         7531 |                 | Biodistribution in normal rat lung in the presence of 0.01 M Gd/0.05 M lig                               |                | BAO_0000218   | CHEMBL618653  |         9866 |          10116 | Intermediate  |            1 |             |                    |       50597 | N               |                1 | 2048.0        |                |
|         7532 |                 | Biodistribution in normal rat lung in the presence of NAC Gd 0.01 M lig at 2 hr                          |                | BAO_0000218   | CHEMBL618654  |         9866 |          10116 | Intermediate  |            1 |             |                    |       50597 | N               |                1 | 2048.0        |                |
|         7533 |                 | Recovery rate from urine and bile was determined after iv administration at 20 mg/kg in rats; Not tested |                | BAO_0000218   | CHEMBL618655  |         6351 |          10116 | Intermediate  |            1 |             |                    |       50597 | N               |                1 |               |                |



source_headers: assay_id
src_assay_id
description
assay_category
bao_format
chembl_id
doc_id
assay_tax_id
curated_by
src_id
cell_id
target_headers: assays_ASI
assays_SRASSI
assays_Descri
assays_ASSCA
assays_BAFO
assays_CHEI
assays_DOI
assays_ASSTI
assays_CURB
assays_SRI
assays_CI
column_mappings: assay_id
assays_ASI
src_assay_id
assays_SRASSI
description
assays_Descri
assay_category
assays_ASSCA
bao_format
assays_BAFO
chembl_id
assays_CHEI
doc_id
assays_DOI
assay_tax_id
assays_ASSTI
curated_by
assays_CURB
src_id
assays_SRI
cell_id
assays_CI
output: {"column_mappings": [["assay_id", "assays_ASI"], ["src_assay_id", "assays_SRASSI"], ["description", "assays_Descri"], ["assay_category", "assays_ASSCA"], ["bao_format", "assays_BAFO"], ["chembl_id", "assays_CHEI"], ["doc_id", "assays_DOI"], ["assay_tax_id", "assays_ASSTI"], ["curated_by", "assays_CURB"], ["src_id", "assays_SRI"], ["cell_id", "assays_CI"], ["assay_type", null], ["assay_test_type", null], ["assay_organism", null], ["assay_strain", null], ["assay_tissue", null], ["assay_cell_type", null]]}