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_organism   | variant_id   | assay_type   | description                                                                                                 | assay_strain   | chembl_id    | assay_tax_id   |   confidence_score |   src_id | relationship_type   |   doc_id | assay_test_type   | assay_category   | assay_tissue   | assay_cell_type   | assay_subcellular_fraction   |
|-----------:|:-----------------|:-------------|:-------------|:------------------------------------------------------------------------------------------------------------|:---------------|:-------------|:---------------|-------------------:|---------:|:--------------------|---------:|:------------------|:-----------------|:---------------|:------------------|:-----------------------------|
|          1 |                  |              | B            | The compound was tested for the in vitro inhibition of platelet 12-lipoxygenase at a concentration of 30 uM |                | CHEMBL615117 |                |                  8 |        1 | H                   |    11087 |                   |                  |                |                   |                              |
|          2 |                  |              | F            | Compound was evaluated for its ability to mobilize calcium in 1321NI cells                                  |                | CHEMBL615118 |                |                  0 |        1 | U                   |      684 |                   |                  |                |                   |                              |
|          3 |                  |              | B            |                                                                                                             |                | CHEMBL615119 |                |                  0 |        1 | U                   |    15453 |                   |                  |                |                   |                              |
|          4 | Bos taurus       |              | B            | Binding affinity against A2 adenosine receptor in bovine striatal membranes using [3H]CGS-21680             |                | CHEMBL615120 | 9913.0         |                  4 |        1 | H                   |    17841 |                   |                  |                |                   |                              |
|          5 | Homo sapiens     |              | F            | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          |                | CHEMBL615121 | 9606.0         |                  1 |        1 | N                   |    17430 |                   |                  |                | 143B              |                              |
|          6 | Homo sapiens     |              | F            | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          |                | CHEMBL615122 | 9606.0         |                  1 |        1 | N                   |    17430 |                   |                  |                | 143B              |                              |
|          7 | Mus musculus     |              | F            | Cytotoxic Activity was evaluated against 143B (TK-) tumor cells                                             |                | CHEMBL615123 | 10090.0        |                  1 |        1 | N                   |    13799 |                   |                  |                | 143B              |                              |
|          8 | Homo sapiens     |              | F            | In vitro cell cytotoxicity was determined against 143B cell line                                            |                | CHEMBL615124 | 9606.0         |                  1 |        1 | N                   |    17774 |                   |                  |                | 143B              |                              |
|          9 | Homo sapiens     |              | F            | Inhibitory activity against tumor osteosarcoma cell line 143B after 72 hr continuous exposure to compound   |                | CHEMBL615125 | 9606.0         |                  1 |        1 | N                   |     3801 |                   |                  |                | 143B              |                              |
|         10 | Homo sapiens     |              | F            | In vitro cell cytotoxicity against 143B-LTK cell lines expressed in HSV-1 TK                                |                | CHEMBL615126 | 9606.0         |                  1 |        1 | N                   |    17430 |                   |                  |                | 143B              |                              |

TableB:
|   assay_id | assay_organism   | variant_id   | assay_type   | description                                                                                                 | assay_strain   | chembl_id    | assay_tax_id   |   confidence_score |   src_id | relationship_type   |    tid | curated_by   | src_assay_id   | cell_id   | bao_format   | tissue_id   |
|-----------:|:-----------------|:-------------|:-------------|:------------------------------------------------------------------------------------------------------------|:---------------|:-------------|:---------------|-------------------:|---------:|:--------------------|-------:|:-------------|:---------------|:----------|:-------------|:------------|
|          1 |                  |              | B            | The compound was tested for the in vitro inhibition of platelet 12-lipoxygenase at a concentration of 30 uM |                | CHEMBL615117 |                |                  8 |        1 | H                   |  12052 | Autocuration |                |           | BAO_0000019  |             |
|          2 |                  |              | F            | Compound was evaluated for its ability to mobilize calcium in 1321NI cells                                  |                | CHEMBL615118 |                |                  0 |        1 | U                   |  22226 | Autocuration |                |           | BAO_0000219  |             |
|          3 |                  |              | B            |                                                                                                             |                | CHEMBL615119 |                |                  0 |        1 | U                   |  22226 | Autocuration |                |           | BAO_0000019  |             |
|          4 | Bos taurus       |              | B            | Binding affinity against A2 adenosine receptor in bovine striatal membranes using [3H]CGS-21680             |                | CHEMBL615120 | 9913.0         |                  4 |        1 | H                   | 104729 | Autocuration |                |           | BAO_0000249  |             |
|          5 | Homo sapiens     |              | F            | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          |                | CHEMBL615121 | 9606.0         |                  1 |        1 | N                   |  80001 | Intermediate |                | 163.0     | BAO_0000219  |             |
|          6 | Homo sapiens     |              | F            | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          |                | CHEMBL615122 | 9606.0         |                  1 |        1 | N                   |  80001 | Intermediate |                | 163.0     | BAO_0000219  |             |
|          7 | Mus musculus     |              | F            | Cytotoxic Activity was evaluated against 143B (TK-) tumor cells                                             |                | CHEMBL615123 | 10090.0        |                  1 |        1 | N                   |  80001 | Intermediate |                | 163.0     | BAO_0000219  |             |
|          8 | Homo sapiens     |              | F            | In vitro cell cytotoxicity was determined against 143B cell line                                            |                | CHEMBL615124 | 9606.0         |                  1 |        1 | N                   |  80001 | Expert       |                | 163.0     | BAO_0000219  |             |
|          9 | Homo sapiens     |              | F            | Inhibitory activity against tumor osteosarcoma cell line 143B after 72 hr continuous exposure to compound   |                | CHEMBL615125 | 9606.0         |                  1 |        1 | N                   |  80001 | Intermediate |                | 163.0     | BAO_0000219  |             |
|         10 | Homo sapiens     |              | F            | In vitro cell cytotoxicity against 143B-LTK cell lines expressed in HSV-1 TK                                |                | CHEMBL615126 | 9606.0         |                  1 |        1 | N                   |  80001 | Intermediate |                | 163.0     | BAO_0000219  |             |



source_headers: assay_id
assay_organism
variant_id
assay_type
description
assay_strain
chembl_id
assay_tax_id
confidence_score
src_id
relationship_type
target_headers: assay_id
assay_organism
variant_id
assay_type
description
assay_strain
chembl_id
assay_tax_id
confidence_score
src_id
relationship_type
column_mappings: assay_id
assay_id
assay_organism
assay_organism
variant_id
variant_id
assay_type
assay_type
description
description
assay_strain
assay_strain
chembl_id
chembl_id
assay_tax_id
assay_tax_id
confidence_score
confidence_score
src_id
src_id
relationship_type
relationship_type
output: {"column_mappings": [["assay_id", "assay_id"], ["assay_organism", "assay_organism"], ["variant_id", "variant_id"], ["assay_type", "assay_type"], ["description", "description"], ["assay_strain", "assay_strain"], ["chembl_id", "chembl_id"], ["assay_tax_id", "assay_tax_id"], ["confidence_score", "confidence_score"], ["src_id", "src_id"], ["relationship_type", "relationship_type"], ["doc_id", null], ["assay_test_type", null], ["assay_category", null], ["assay_tissue", null], ["assay_cell_type", null], ["assay_subcellular_fraction", null]]}