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 |    tid | assay_test_type   | bao_format   | cell_id   | assay_cell_type   | description                                                                                 | assay_category   | src_assay_id   | relationship_type   | curated_by   | assay_type   | assay_tax_id   | chembl_id    | variant_id   | tissue_id   |   doc_id | assay_organism   | assay_strain   |
|-----------:|-------:|:------------------|:-------------|:----------|:------------------|:--------------------------------------------------------------------------------------------|:-----------------|:---------------|:--------------------|:-------------|:-------------|:---------------|:-------------|:-------------|:------------|---------:|:-----------------|:---------------|
|          1 |  12052 |                   | BAO00o0010   |           |                   | fhec9mpoundwastesyedfortheondlt59inhibo6ionofplatelet12lipoxggenaceatxclbcentrxt9onof30uM   |                  |                | H                   | xutoduration | B            |                | CH3MBi615117 |              |             |    11087 |                  |                |
|          2 |  22226 |                   | BAO0p0p219   |           |                   | Compouhdwasevaluatedforutsxhilityt8kivklizecapciumim1311NIcells                             |                  |                | U                   | Autoc7rztion | F            |                | CH2MBL61511i |              |             |      684 |                  |                |
|          3 |  22226 |                   | BA90000919   |           |                   |                                                                                             |                  |                | U                   | Autoxuratioh | B            |                | CHEjBL61t119 |              |             |    15453 |                  |                |
|          4 | 104729 |                   | BAk0000239   |           |                   | BimdingsffihigyagainstA2qden8simereceptorinbovinew4diq6aljenbrwnesusing3HxGS21680           |                  |                | H                   | Aytocuratlon | B            | 32453.0        | CHEMfL615q20 |              |             |    17841 | Bos taurus       |                |
|          5 |  80001 |                   | BAO000o2w9   | 462.0     | 143B              | unvitrocellchtltlxucit7agwinst1t3BcflllinesH7man9steosarcomacflllin4                        |                  |                | N                   | Intermewiaye | F            | 21617.0        | CHEMnLt15121 |              |             |    17430 | Homo sapiens     |                |
|          6 |  80001 |                   | BAO000o2q9   | 451.0     | 143B              | Invitrocellcytotox7citysgxlnwt133BfelllinewHumajosteoswrcomacrllkkne                        |                  |                | N                   | Integnediate | F            | 7206.0         | CHEjBo615122 |              |             |    17430 | Homo sapiens     |                |
|          7 |  80001 |                   | gAO00p0219   | 465.0     | 143B              | CytptoxicActiv8tywaswvakuatedagaimstw43BTmtumorvflps                                        |                  |                | N                   | Interjedlate | F            | 34664.0        | CHEMgLy15123 |              |             |    13799 | Mus musculus     |                |
|          8 |  80001 |                   | BAko000219   | 372.0     | 143B              | Ijgktroc4llcytorosisi5y3asddherminedagainst143Bcellline                                     |                  |                | N                   | Experf       | F            | 1379.0         | CH2MBL61512e |              |             |    17774 | Homo sapiens     |                |
|          9 |  80001 |                   | BxO000021i   | 651.0     | 143B              | Inhibitogyactib7tyagainwt4umorosyeosa3cohac3lloine143Bxfter72hrconhknuous4xposur4tocom0punc |                  |                | N                   | Interjedia4e | F            | 18438.0        | CHEMBLu14125 |              |             |     3801 | Homo sapiens     |                |
|         10 |  80001 |                   | gAO0009219   | 604.0     | 143B              | Invlfrocelkcy5otoxicityaga7nct14eBLTKvelllinesexpressedinHwd1ri                             |                  |                | N                   | Intedmeduate | F            | 20909.0        | CHEjBL61y126 |              |             |    17430 | Homo sapiens     |                |

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



source_headers: assay_id
tid
assay_test_type
bao_format
cell_id
assay_cell_type
description
assay_category
src_assay_id
relationship_type
curated_by
assay_type
assay_tax_id
chembl_id
variant_id
tissue_id
target_headers: assays_assay_id
assays_tid
assays_assay_test_type
assays_bao_format
assays_cell_id
assays_assay_cell_type
assays_description
assays_assay_category
assays_src_assay_id
assays_relationship_type
assays_curated_by
assays_assay_type
assays_assay_tax_id
assays_chembl_id
assays_variant_id
assays_tissue_id
column_mappings: assay_id
assays_assay_id
tid
assays_tid
assay_test_type
assays_assay_test_type
bao_format
assays_bao_format
cell_id
assays_cell_id
assay_cell_type
assays_assay_cell_type
description
assays_description
assay_category
assays_assay_category
src_assay_id
assays_src_assay_id
relationship_type
assays_relationship_type
curated_by
assays_curated_by
assay_type
assays_assay_type
assay_tax_id
assays_assay_tax_id
chembl_id
assays_chembl_id
variant_id
assays_variant_id
tissue_id
assays_tissue_id
output: {"column_mappings": [["assay_id", "assays_assay_id"], ["tid", "assays_tid"], ["assay_test_type", "assays_assay_test_type"], ["bao_format", "assays_bao_format"], ["cell_id", "assays_cell_id"], ["assay_cell_type", "assays_assay_cell_type"], ["description", "assays_description"], ["assay_category", "assays_assay_category"], ["src_assay_id", "assays_src_assay_id"], ["relationship_type", "assays_relationship_type"], ["curated_by", "assays_curated_by"], ["assay_type", "assays_assay_type"], ["assay_tax_id", "assays_assay_tax_id"], ["chembl_id", "assays_chembl_id"], ["variant_id", "assays_variant_id"], ["tissue_id", "assays_tissue_id"], ["doc_id", null], ["assay_organism", null], ["assay_strain", null]]}