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

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



source_headers: assay_id
src_id
description
assay_tissue
bao_format
src_assay_id
assay_organism
assay_category
curated_by
doc_id
assay_test_type
target_headers: assays_assay_id
assays_src_id
assays_description
assays_assay_tissue
assays_bao_format
assays_src_assay_id
assays_assay_organism
assays_assay_category
assays_curated_by
assays_doc_id
assays_assay_test_type
column_mappings: assay_id
assays_assay_id
src_id
assays_src_id
description
assays_description
assay_tissue
assays_assay_tissue
bao_format
assays_bao_format
src_assay_id
assays_src_assay_id
assay_organism
assays_assay_organism
assay_category
assays_assay_category
curated_by
assays_curated_by
doc_id
assays_doc_id
assay_test_type
assays_assay_test_type
output: {"column_mappings": [["assay_id", "assays_assay_id"], ["src_id", "assays_src_id"], ["description", "assays_description"], ["assay_tissue", "assays_assay_tissue"], ["bao_format", "assays_bao_format"], ["src_assay_id", "assays_src_assay_id"], ["assay_organism", "assays_assay_organism"], ["assay_category", "assays_assay_category"], ["curated_by", "assays_curated_by"], ["doc_id", "assays_doc_id"], ["assay_test_type", "assays_assay_test_type"], ["assay_type", null], ["assay_tax_id", null], ["assay_strain", null], ["assay_cell_type", null], ["assay_subcellular_fraction", null], ["tid", null]]}