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   |   confidence_score | assay_type   | assay_cell_type   |   src_id | description                                                                                                 |    tid | assay_tax_id   | assay_subcellular_fraction   | variant_id   | chembl_id    |   doc_id | tissue_id   | cell_id   | src_assay_id   | assay_test_type   | assay_category   | assay_strain   |
|-----------:|:-----------------|-------------------:|:-------------|:------------------|---------:|:------------------------------------------------------------------------------------------------------------|-------:|:---------------|:-----------------------------|:-------------|:-------------|---------:|:------------|:----------|:---------------|:------------------|:-----------------|:---------------|
|          1 |                  |                  8 | B            |                   |        1 | The compound was tested for the in vitro inhibition of platelet 12-lipoxygenase at a concentration of 30 uM |  12052 |                |                              |              | CHEMBL615117 |    11087 |             |           |                |                   |                  |                |
|          2 |                  |                  0 | F            |                   |        1 | Compound was evaluated for its ability to mobilize calcium in 1321NI cells                                  |  22226 |                |                              |              | CHEMBL615118 |      684 |             |           |                |                   |                  |                |
|          3 |                  |                  0 | B            |                   |        1 |                                                                                                             |  22226 |                |                              |              | CHEMBL615119 |    15453 |             |           |                |                   |                  |                |
|          4 | Bos taurus       |                  4 | B            |                   |        1 | Binding affinity against A2 adenosine receptor in bovine striatal membranes using [3H]CGS-21680             | 104729 | 9913.0         |                              |              | CHEMBL615120 |    17841 |             |           |                |                   |                  |                |
|          5 | Homo sapiens     |                  1 | F            | 143B              |        1 | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          |  80001 | 9606.0         |                              |              | CHEMBL615121 |    17430 |             | 163.0     |                |                   |                  |                |
|          6 | Homo sapiens     |                  1 | F            | 143B              |        1 | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          |  80001 | 9606.0         |                              |              | CHEMBL615122 |    17430 |             | 163.0     |                |                   |                  |                |
|          7 | Mus musculus     |                  1 | F            | 143B              |        1 | Cytotoxic Activity was evaluated against 143B (TK-) tumor cells                                             |  80001 | 10090.0        |                              |              | CHEMBL615123 |    13799 |             | 163.0     |                |                   |                  |                |
|          8 | Homo sapiens     |                  1 | F            | 143B              |        1 | In vitro cell cytotoxicity was determined against 143B cell line                                            |  80001 | 9606.0         |                              |              | CHEMBL615124 |    17774 |             | 163.0     |                |                   |                  |                |
|          9 | Homo sapiens     |                  1 | F            | 143B              |        1 | Inhibitory activity against tumor osteosarcoma cell line 143B after 72 hr continuous exposure to compound   |  80001 | 9606.0         |                              |              | CHEMBL615125 |     3801 |             | 163.0     |                |                   |                  |                |
|         10 | Homo sapiens     |                  1 | F            | 143B              |        1 | In vitro cell cytotoxicity against 143B-LTK cell lines expressed in HSV-1 TK                                |  80001 | 9606.0         |                              |              | CHEMBL615126 |    17430 |             | 163.0     |                |                   |                  |                |

TableB:
|   assays_assay_id | assays_assay_organism   |   assays_confidence_score | assays_assay_type   | assays_assay_cell_type   |   assays_src_id | assays_description                                                                                          |   assays_tid | assays_assay_tax_id   | assays_assay_subcellular_fraction   | assays_variant_id   | assays_chembl_id   |   assays_doc_id | assays_tissue_id   | assays_cell_id   | assays_src_assay_id   | assays_assay_tissue   | assays_relationship_type   | assays_curated_by   | assays_bao_format   |
|------------------:|:------------------------|--------------------------:|:--------------------|:-------------------------|----------------:|:------------------------------------------------------------------------------------------------------------|-------------:|:----------------------|:------------------------------------|:--------------------|:-------------------|----------------:|:-------------------|:-----------------|:----------------------|:----------------------|:---------------------------|:--------------------|:--------------------|
|                 1 |                         |                         8 | B                   |                          |               1 | The compound was tested for the in vitro inhibition of platelet 12-lipoxygenase at a concentration of 30 uM |        12052 |                       |                                     |                     | CHEMBL615117       |           11087 |                    |                  |                       |                       | H                          | Autocuration        | BAO_0000019         |
|                 2 |                         |                         0 | F                   |                          |               1 | Compound was evaluated for its ability to mobilize calcium in 1321NI cells                                  |        22226 |                       |                                     |                     | CHEMBL615118       |             684 |                    |                  |                       |                       | U                          | Autocuration        | BAO_0000219         |
|                 3 |                         |                         0 | B                   |                          |               1 |                                                                                                             |        22226 |                       |                                     |                     | CHEMBL615119       |           15453 |                    |                  |                       |                       | U                          | Autocuration        | BAO_0000019         |
|                 4 | Bos taurus              |                         4 | B                   |                          |               1 | Binding affinity against A2 adenosine receptor in bovine striatal membranes using [3H]CGS-21680             |       104729 | 9913.0                |                                     |                     | CHEMBL615120       |           17841 |                    |                  |                       |                       | H                          | Autocuration        | BAO_0000249         |
|                 5 | Homo sapiens            |                         1 | F                   | 143B                     |               1 | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          |        80001 | 9606.0                |                                     |                     | CHEMBL615121       |           17430 |                    | 163.0            |                       |                       | N                          | Intermediate        | BAO_0000219         |
|                 6 | Homo sapiens            |                         1 | F                   | 143B                     |               1 | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          |        80001 | 9606.0                |                                     |                     | CHEMBL615122       |           17430 |                    | 163.0            |                       |                       | N                          | Intermediate        | BAO_0000219         |
|                 7 | Mus musculus            |                         1 | F                   | 143B                     |               1 | Cytotoxic Activity was evaluated against 143B (TK-) tumor cells                                             |        80001 | 10090.0               |                                     |                     | CHEMBL615123       |           13799 |                    | 163.0            |                       |                       | N                          | Intermediate        | BAO_0000219         |
|                 8 | Homo sapiens            |                         1 | F                   | 143B                     |               1 | In vitro cell cytotoxicity was determined against 143B cell line                                            |        80001 | 9606.0                |                                     |                     | CHEMBL615124       |           17774 |                    | 163.0            |                       |                       | N                          | Expert              | BAO_0000219         |
|                 9 | Homo sapiens            |                         1 | F                   | 143B                     |               1 | Inhibitory activity against tumor osteosarcoma cell line 143B after 72 hr continuous exposure to compound   |        80001 | 9606.0                |                                     |                     | CHEMBL615125       |            3801 |                    | 163.0            |                       |                       | N                          | Intermediate        | BAO_0000219         |
|                10 | Homo sapiens            |                         1 | F                   | 143B                     |               1 | In vitro cell cytotoxicity against 143B-LTK cell lines expressed in HSV-1 TK                                |        80001 | 9606.0                |                                     |                     | CHEMBL615126       |           17430 |                    | 163.0            |                       |                       | N                          | Intermediate        | BAO_0000219         |



source_headers: assay_id
assay_organism
confidence_score
assay_type
assay_cell_type
src_id
description
tid
assay_tax_id
assay_subcellular_fraction
variant_id
chembl_id
doc_id
tissue_id
cell_id
src_assay_id
target_headers: assays_assay_id
assays_assay_organism
assays_confidence_score
assays_assay_type
assays_assay_cell_type
assays_src_id
assays_description
assays_tid
assays_assay_tax_id
assays_assay_subcellular_fraction
assays_variant_id
assays_chembl_id
assays_doc_id
assays_tissue_id
assays_cell_id
assays_src_assay_id
column_mappings: assay_id
assays_assay_id
assay_organism
assays_assay_organism
confidence_score
assays_confidence_score
assay_type
assays_assay_type
assay_cell_type
assays_assay_cell_type
src_id
assays_src_id
description
assays_description
tid
assays_tid
assay_tax_id
assays_assay_tax_id
assay_subcellular_fraction
assays_assay_subcellular_fraction
variant_id
assays_variant_id
chembl_id
assays_chembl_id
doc_id
assays_doc_id
tissue_id
assays_tissue_id
cell_id
assays_cell_id
src_assay_id
assays_src_assay_id
output: {"column_mappings": [["assay_id", "assays_assay_id"], ["assay_organism", "assays_assay_organism"], ["confidence_score", "assays_confidence_score"], ["assay_type", "assays_assay_type"], ["assay_cell_type", "assays_assay_cell_type"], ["src_id", "assays_src_id"], ["description", "assays_description"], ["tid", "assays_tid"], ["assay_tax_id", "assays_assay_tax_id"], ["assay_subcellular_fraction", "assays_assay_subcellular_fraction"], ["variant_id", "assays_variant_id"], ["chembl_id", "assays_chembl_id"], ["doc_id", "assays_doc_id"], ["tissue_id", "assays_tissue_id"], ["cell_id", "assays_cell_id"], ["src_assay_id", "assays_src_assay_id"], ["assay_test_type", null], ["assay_category", null], ["assay_strain", null]]}