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

TableB:
|   assay_id | assay_tissue   |   doc_id | cell_id   | assay_type   | assay_strain   | relationship_type   |   confidence_score | curated_by   |   src_id | src_assay_id   | chembl_id    | bao_format   | tissue_id   | variant_id   |
|-----------:|:---------------|---------:|:----------|:-------------|:---------------|:--------------------|-------------------:|:-------------|---------:|:---------------|:-------------|:-------------|:------------|:-------------|
|          1 |                |    11087 |           | B            |                | H                   |                  8 | Autocuration |        1 |                | CHEMBL615117 | BAO_0000019  |             |              |
|          2 |                |      684 |           | F            |                | U                   |                  0 | Autocuration |        1 |                | CHEMBL615118 | BAO_0000219  |             |              |
|          3 |                |    15453 |           | B            |                | U                   |                  0 | Autocuration |        1 |                | CHEMBL615119 | BAO_0000019  |             |              |
|          4 |                |    17841 |           | B            |                | H                   |                  4 | Autocuration |        1 |                | CHEMBL615120 | BAO_0000249  |             |              |
|          5 |                |    17430 | 163.0     | F            |                | N                   |                  1 | Intermediate |        1 |                | CHEMBL615121 | BAO_0000219  |             |              |
|          6 |                |    17430 | 163.0     | F            |                | N                   |                  1 | Intermediate |        1 |                | CHEMBL615122 | BAO_0000219  |             |              |
|          7 |                |    13799 | 163.0     | F            |                | N                   |                  1 | Intermediate |        1 |                | CHEMBL615123 | BAO_0000219  |             |              |
|          8 |                |    17774 | 163.0     | F            |                | N                   |                  1 | Expert       |        1 |                | CHEMBL615124 | BAO_0000219  |             |              |
|          9 |                |     3801 | 163.0     | F            |                | N                   |                  1 | Intermediate |        1 |                | CHEMBL615125 | BAO_0000219  |             |              |
|         10 |                |    17430 | 163.0     | F            |                | N                   |                  1 | Intermediate |        1 |                | CHEMBL615126 | BAO_0000219  |             |              |



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