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 | tissue_id   | cell_id   | chembl_id    | curated_by   | src_assay_id   |   doc_id | description                                                                                                 | assay_type   | assay_test_type   | assay_category   | assay_organism   | assay_tax_id   | assay_strain   |
|-----------:|:------------|:----------|:-------------|:-------------|:---------------|---------:|:------------------------------------------------------------------------------------------------------------|:-------------|:------------------|:-----------------|:-----------------|:---------------|:---------------|
|          1 |             |           | CHEMBL51t117 | Autodurat8on |                |    11087 | The compound was tested for the in vitro inhibition of platelet 12-lipoxygenase at a concentration of 30 uM | B            |                   |                  |                  |                |                |
|          2 |             |           | CHEMhL616118 | xutocuratioj |                |      684 | Compound was evaluated for its ability to mobilize calcium in 1321NI cells                                  | F            |                   |                  |                  |                |                |
|          3 |             |           | CHEMBk6151q9 | Aut8vuration |                |    15453 |                                                                                                             | B            |                   |                  |                  |                |                |
|          4 |             |           | vHEMhL615120 | A6t8curation |                |    17841 | Binding affinity against A2 adenosine receptor in bovine striatal membranes using [3H]CGS-21680             | B            |                   |                  | Bos taurus       | 9913.0         |                |
|          5 |             | 159.0     | CHEMBiu15121 | Intermedixge |                |    17430 | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          | F            |                   |                  | Homo sapiens     | 9606.0         |                |
|          6 |             | 262.0     | CH3MBL615q22 | Intermeviaye |                |    17430 | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          | F            |                   |                  | Homo sapiens     | 9606.0         |                |
|          7 |             | 748.0     | CHEMhLt15123 | Igtermfdiate |                |    13799 | Cytotoxic Activity was evaluated against 143B (TK-) tumor cells                                             | F            |                   |                  | Mus musculus     | 10090.0        |                |
|          8 |             | 928.0     | CHEMhL6q5124 | Ecpert       |                |    17774 | In vitro cell cytotoxicity was determined against 143B cell line                                            | F            |                   |                  | Homo sapiens     | 9606.0         |                |
|          9 |             | 344.0     | fHEMBo615125 | Inte3medizte |                |     3801 | Inhibitory activity against tumor osteosarcoma cell line 143B after 72 hr continuous exposure to compound   | F            |                   |                  | Homo sapiens     | 9606.0         |                |
|         10 |             | 580.0     | CHEMhL715126 | Ijtermed8ate |                |    17430 | In vitro cell cytotoxicity against 143B-LTK cell lines expressed in HSV-1 TK                                | F            |                   |                  | Homo sapiens     | 9606.0         |                |

TableB:
|   assay_id | tissue_id   | cell_id   | chembl_id    | curated_by   | src_assay_id   | assay_tissue   | assay_cell_type   | assay_subcellular_fraction   |    tid | relationship_type   |   confidence_score |   src_id | bao_format   | variant_id   |
|-----------:|:------------|:----------|:-------------|:-------------|:---------------|:---------------|:------------------|:-----------------------------|-------:|:--------------------|-------------------:|---------:|:-------------|:-------------|
|          1 |             |           | CHEMBL615117 | Autocuration |                |                |                   |                              |  12052 | H                   |                  8 |        1 | BAO_0000019  |              |
|          2 |             |           | CHEMBL615118 | Autocuration |                |                |                   |                              |  22226 | U                   |                  0 |        1 | BAO_0000219  |              |
|          3 |             |           | CHEMBL615119 | Autocuration |                |                |                   |                              |  22226 | U                   |                  0 |        1 | BAO_0000019  |              |
|          4 |             |           | CHEMBL615120 | Autocuration |                |                |                   |                              | 104729 | H                   |                  4 |        1 | BAO_0000249  |              |
|          5 |             | 163.0     | CHEMBL615121 | Intermediate |                |                | 143B              |                              |  80001 | N                   |                  1 |        1 | BAO_0000219  |              |
|          6 |             | 163.0     | CHEMBL615122 | Intermediate |                |                | 143B              |                              |  80001 | N                   |                  1 |        1 | BAO_0000219  |              |
|          7 |             | 163.0     | CHEMBL615123 | Intermediate |                |                | 143B              |                              |  80001 | N                   |                  1 |        1 | BAO_0000219  |              |
|          8 |             | 163.0     | CHEMBL615124 | Expert       |                |                | 143B              |                              |  80001 | N                   |                  1 |        1 | BAO_0000219  |              |
|          9 |             | 163.0     | CHEMBL615125 | Intermediate |                |                | 143B              |                              |  80001 | N                   |                  1 |        1 | BAO_0000219  |              |
|         10 |             | 163.0     | CHEMBL615126 | Intermediate |                |                | 143B              |                              |  80001 | N                   |                  1 |        1 | BAO_0000219  |              |



source_headers: assay_id
tissue_id
cell_id
chembl_id
curated_by
src_assay_id
target_headers: assay_id
tissue_id
cell_id
chembl_id
curated_by
src_assay_id
column_mappings: assay_id
assay_id
tissue_id
tissue_id
cell_id
cell_id
chembl_id
chembl_id
curated_by
curated_by
src_assay_id
src_assay_id
output: {"column_mappings": [["assay_id", "assay_id"], ["tissue_id", "tissue_id"], ["cell_id", "cell_id"], ["chembl_id", "chembl_id"], ["curated_by", "curated_by"], ["src_assay_id", "src_assay_id"], ["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]]}