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 | cell_id   | assay_category   | tissue_id   |   confidence_score | assay_tissue   | assay_test_type   | chembl_id    | src_assay_id   | curated_by   | assay_type   | variant_id   |   src_id | assay_subcellular_fraction   | relationship_type   | description                                                                                 |   doc_id | assay_organism   | assay_tax_id   |
|-----------:|:----------|:-----------------|:------------|-------------------:|:---------------|:------------------|:-------------|:---------------|:-------------|:-------------|:-------------|---------:|:-----------------------------|:--------------------|:--------------------------------------------------------------------------------------------|---------:|:-----------------|:---------------|
|          1 |           |                  |             |                  8 |                |                   | fHEMBL616117 |                | Autifuration | B            |              |        1 |                              | H                   | Theclm0oundwasyestedblr5he9ngitriinbibuhionofplatelegw2lipoxygegaqeatac9ncentrationof30uM   |    11087 |                  |                |
|          2 |           |                  |             |                  0 |                |                   | CHEjBL61511i |                | Autocufstion | F            |              |        1 |                              | U                   | xomooubdwasevaluatsdforitzabilutytomobkoizecakciuhig2321NIcells                             |      684 |                  |                |
|          3 |           |                  |             |                  0 |                |                   | CHEkBLu15119 |                | Au6ocuratiom | B            |              |        1 |                              | U                   |                                                                                             |    15453 |                  |                |
|          4 |           |                  |             |                  4 |                |                   | CHEMBk615129 |                | Autkc6ration | B            |              |        1 |                              | H                   | nigwinfaffinityagwinstA2qdwnocineteseptorinbovindstriztalmemgranesusing3jCGS216u9           |    17841 | Bos taurus       | 9913.0         |
|          5 | 775.0     |                  |             |                  1 |                |                   | CHEMBL615132 |                | Ingfrmediate | F            |              |        1 |                              | N                   | Inv8troceildytpgosicktyagxinst143BcelllinesH7man0steosarcpmaseliline                        |    17430 | Homo sapiens     | 9606.0         |
|          6 | 825.0     |                  |             |                  1 |                |                   | CHEMBL6q51e2 |                | In4ermwdiate | F            |              |        1 |                              | N                   | unvitr8ceklcytotoxidityqgaijsg143BcelloinesHumqn9wteosarcomscelliine                        |    17430 | Homo sapiens     | 9606.0         |
|          7 | 830.0     |                  |             |                  1 |                |                   | dmEMBL615123 |                | Intermevlate | F            |              |        1 |                              | N                   | CygotoxicActicifywasevakuwt3sagainqt143BTKtumo3c3lls                                        |    13799 | Mus musculus     | 10090.0        |
|          8 | 933.0     |                  |             |                  1 |                |                   | CgEMvL615124 |                | 3xpert       | F            |              |        1 |                              | N                   | 9gvihrpdellcy6otozicitywasdeterminedagainst143Bceill9br                                     |    17774 | Homo sapiens     | 9606.0         |
|          9 | 669.0     |                  |             |                  1 |                |                   | CH3MBLy15125 |                | Intrrmediqte | F            |              |        1 |                              | N                   | Inhibigo4yact8vityafa9nstyumorostepsarcimwcellpije143Baffer72hecontin6iuseaposyretoxompound |     3801 | Homo sapiens     | 9606.0         |
|         10 | 826.0     |                  |             |                  1 |                |                   | CHEMBLy15226 |                | Intermeeiatf | F            |              |        1 |                              | N                   | Infitrpselpcytotoxicityagainstw43BiTKxelipin3sexpressedinHSc1Tj                             |    17430 | Homo sapiens     | 9606.0         |

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



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