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 | relationship_type   | variant_id   | cell_id   | assay_strain   | description                                                                                                 | curated_by   | src_assay_id   | assay_cell_type   | assay_category   | tissue_id   |    tid | bao_format   | assay_type   | assay_subcellular_fraction   |   doc_id | assay_test_type   | assay_organism   | assay_tax_id   |
|-----------:|:--------------------|:-------------|:----------|:---------------|:------------------------------------------------------------------------------------------------------------|:-------------|:---------------|:------------------|:-----------------|:------------|-------:|:-------------|:-------------|:-----------------------------|---------:|:------------------|:-----------------|:---------------|
|          1 | H                   |              |           |                | The compound was tested for the in vitro inhibition of platelet 12-lipoxygenase at a concentration of 30 uM | Autocuration |                |                   |                  |             |  12052 | BAO_0000019  | B            |                              |    11087 |                   |                  |                |
|          2 | U                   |              |           |                | Compound was evaluated for its ability to mobilize calcium in 1321NI cells                                  | Autocuration |                |                   |                  |             |  22226 | BAO_0000219  | F            |                              |      684 |                   |                  |                |
|          3 | U                   |              |           |                |                                                                                                             | Autocuration |                |                   |                  |             |  22226 | BAO_0000019  | B            |                              |    15453 |                   |                  |                |
|          4 | H                   |              |           |                | Binding affinity against A2 adenosine receptor in bovine striatal membranes using [3H]CGS-21680             | Autocuration |                |                   |                  |             | 104729 | BAO_0000249  | B            |                              |    17841 |                   | Bos taurus       | 9913.0         |
|          5 | N                   |              | 163.0     |                | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          | Intermediate |                | 143B              |                  |             |  80001 | BAO_0000219  | F            |                              |    17430 |                   | Homo sapiens     | 9606.0         |
|          6 | N                   |              | 163.0     |                | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          | Intermediate |                | 143B              |                  |             |  80001 | BAO_0000219  | F            |                              |    17430 |                   | Homo sapiens     | 9606.0         |
|          7 | N                   |              | 163.0     |                | Cytotoxic Activity was evaluated against 143B (TK-) tumor cells                                             | Intermediate |                | 143B              |                  |             |  80001 | BAO_0000219  | F            |                              |    13799 |                   | Mus musculus     | 10090.0        |
|          8 | N                   |              | 163.0     |                | In vitro cell cytotoxicity was determined against 143B cell line                                            | Expert       |                | 143B              |                  |             |  80001 | BAO_0000219  | F            |                              |    17774 |                   | Homo sapiens     | 9606.0         |
|          9 | N                   |              | 163.0     |                | Inhibitory activity against tumor osteosarcoma cell line 143B after 72 hr continuous exposure to compound   | Intermediate |                | 143B              |                  |             |  80001 | BAO_0000219  | F            |                              |     3801 |                   | Homo sapiens     | 9606.0         |
|         10 | N                   |              | 163.0     |                | In vitro cell cytotoxicity against 143B-LTK cell lines expressed in HSV-1 TK                                | Intermediate |                | 143B              |                  |             |  80001 | BAO_0000219  | F            |                              |    17430 |                   | Homo sapiens     | 9606.0         |

TableB:
|   assay_id | relationship_type   | variant_id   | cell_id   | assay_strain   | description                                                                                                 | curated_by   | src_assay_id   | assay_cell_type   | assay_category   | tissue_id   |    tid | bao_format   | assay_type   | assay_subcellular_fraction   |   doc_id | assay_tissue   |   confidence_score |   src_id | chembl_id    |
|-----------:|:--------------------|:-------------|:----------|:---------------|:------------------------------------------------------------------------------------------------------------|:-------------|:---------------|:------------------|:-----------------|:------------|-------:|:-------------|:-------------|:-----------------------------|---------:|:---------------|-------------------:|---------:|:-------------|
|          1 | H                   |              |           |                | The compound was tested for the in vitro inhibition of platelet 12-lipoxygenase at a concentration of 30 uM | Autocuration |                |                   |                  |             |  12052 | BAO_0000019  | B            |                              |    11087 |                |                  8 |        1 | CHEMBL615117 |
|          2 | U                   |              |           |                | Compound was evaluated for its ability to mobilize calcium in 1321NI cells                                  | Autocuration |                |                   |                  |             |  22226 | BAO_0000219  | F            |                              |      684 |                |                  0 |        1 | CHEMBL615118 |
|          3 | U                   |              |           |                |                                                                                                             | Autocuration |                |                   |                  |             |  22226 | BAO_0000019  | B            |                              |    15453 |                |                  0 |        1 | CHEMBL615119 |
|          4 | H                   |              |           |                | Binding affinity against A2 adenosine receptor in bovine striatal membranes using [3H]CGS-21680             | Autocuration |                |                   |                  |             | 104729 | BAO_0000249  | B            |                              |    17841 |                |                  4 |        1 | CHEMBL615120 |
|          5 | N                   |              | 163.0     |                | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          | Intermediate |                | 143B              |                  |             |  80001 | BAO_0000219  | F            |                              |    17430 |                |                  1 |        1 | CHEMBL615121 |
|          6 | N                   |              | 163.0     |                | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          | Intermediate |                | 143B              |                  |             |  80001 | BAO_0000219  | F            |                              |    17430 |                |                  1 |        1 | CHEMBL615122 |
|          7 | N                   |              | 163.0     |                | Cytotoxic Activity was evaluated against 143B (TK-) tumor cells                                             | Intermediate |                | 143B              |                  |             |  80001 | BAO_0000219  | F            |                              |    13799 |                |                  1 |        1 | CHEMBL615123 |
|          8 | N                   |              | 163.0     |                | In vitro cell cytotoxicity was determined against 143B cell line                                            | Expert       |                | 143B              |                  |             |  80001 | BAO_0000219  | F            |                              |    17774 |                |                  1 |        1 | CHEMBL615124 |
|          9 | N                   |              | 163.0     |                | Inhibitory activity against tumor osteosarcoma cell line 143B after 72 hr continuous exposure to compound   | Intermediate |                | 143B              |                  |             |  80001 | BAO_0000219  | F            |                              |     3801 |                |                  1 |        1 | CHEMBL615125 |
|         10 | N                   |              | 163.0     |                | In vitro cell cytotoxicity against 143B-LTK cell lines expressed in HSV-1 TK                                | Intermediate |                | 143B              |                  |             |  80001 | BAO_0000219  | F            |                              |    17430 |                |                  1 |        1 | CHEMBL615126 |



source_headers: assay_id
relationship_type
variant_id
cell_id
assay_strain
description
curated_by
src_assay_id
assay_cell_type
assay_category
tissue_id
tid
bao_format
assay_type
assay_subcellular_fraction
doc_id
target_headers: assay_id
relationship_type
variant_id
cell_id
assay_strain
description
curated_by
src_assay_id
assay_cell_type
assay_category
tissue_id
tid
bao_format
assay_type
assay_subcellular_fraction
doc_id
column_mappings: assay_id
assay_id
relationship_type
relationship_type
variant_id
variant_id
cell_id
cell_id
assay_strain
assay_strain
description
description
curated_by
curated_by
src_assay_id
src_assay_id
assay_cell_type
assay_cell_type
assay_category
assay_category
tissue_id
tissue_id
tid
tid
bao_format
bao_format
assay_type
assay_type
assay_subcellular_fraction
assay_subcellular_fraction
doc_id
doc_id
output: {"column_mappings": [["assay_id", "assay_id"], ["relationship_type", "relationship_type"], ["variant_id", "variant_id"], ["cell_id", "cell_id"], ["assay_strain", "assay_strain"], ["description", "description"], ["curated_by", "curated_by"], ["src_assay_id", "src_assay_id"], ["assay_cell_type", "assay_cell_type"], ["assay_category", "assay_category"], ["tissue_id", "tissue_id"], ["tid", "tid"], ["bao_format", "bao_format"], ["assay_type", "assay_type"], ["assay_subcellular_fraction", "assay_subcellular_fraction"], ["doc_id", "doc_id"], ["assay_test_type", null], ["assay_organism", null], ["assay_tax_id", null]]}