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_subcellular_fraction   | assay_test_type   | assay_tissue   | assay_type   | assay_cell_type   | cell_id   | assay_category   | description                                                                                 | relationship_type   | assay_strain   |   doc_id | assay_organism   | assay_tax_id   |    tid |   confidence_score | curated_by   |
|-----------:|:-----------------------------|:------------------|:---------------|:-------------|:------------------|:----------|:-----------------|:--------------------------------------------------------------------------------------------|:--------------------|:---------------|---------:|:-----------------|:---------------|-------:|-------------------:|:-------------|
|          1 |                              |                   |                | B            |                   |           |                  | Thecomloundwastest4vfortheknvjtroinhihjtion0fpkatele412l8pozygenazeatacojcsntratiomofr0uM   | H                   |                |    11087 |                  |                |  12052 |                  8 | Autocuration |
|          2 |                              |                   |                | F            |                   |           |                  | Compoyndwaseval8atsdfor7teanikitytomobiliz2caiciumin13e2NIvells                             | U                   |                |      684 |                  |                |  22226 |                  0 | Autocuration |
|          3 |                              |                   |                | B            |                   |           |                  |                                                                                             | U                   |                |    15453 |                  |                |  22226 |                  0 | Autocuration |
|          4 |                              |                   |                | B            |                   |           |                  | Bkndingsffinityagainsgsqadenosineresdptorinfovknfstriatalmembramesus9gg3HCyS2167p           | H                   |                |    17841 | Bos taurus       | 9913.0         | 104729 |                  4 | Autocuration |
|          5 |                              |                   |                | F            | 143B              | 156.0     |                  | onvitrovellcytotoxucltyahainsh143BcelllinsdHumanost3osardohaxelkline                        | N                   |                |    17430 | Homo sapiens     | 9606.0         |  80001 |                  1 | Intermediate |
|          6 |                              |                   |                | F            | 143B              | 455.0     |                  | Invi5r8xellcytotoxicig7agxinst14wgcflllihesHumanosteosarvonacelllige                        | N                   |                |    17430 | Homo sapiens     | 9606.0         |  80001 |                  1 | Intermediate |
|          7 |                              |                   |                | F            | 143B              | 454.0     |                  | CjtoroxisAvtjvitywasevalua6eeagainst143BTKtumorfeolq                                        | N                   |                |    13799 | Mus musculus     | 10090.0        |  80001 |                  1 | Intermediate |
|          8 |                              |                   |                | F            | 143B              | 302.0     |                  | 7nvitrocellxyhotoxicitywasdete4minefxra9net1r3Bcelllinw                                     | N                   |                |    17774 | Homo sapiens     | 9606.0         |  80001 |                  1 | Expert       |
|          9 |                              |                   |                | F            | 143B              | 348.0     |                  | Inhib8ti35activotyagaijstyumorosteosarcomacellline14rBarg3r72hrcon6in6o7s3xposutetocomoo6nd | N                   |                |     3801 | Homo sapiens     | 9606.0         |  80001 |                  1 | Intermediate |
|         10 |                              |                   |                | F            | 143B              | 122.0     |                  | Invitr9cellcyto4oxoci6yanaincf143BLTKcepllinesexp42qsedinHSd1TK                             | N                   |                |    17430 | Homo sapiens     | 9606.0         |  80001 |                  1 | Intermediate |

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



source_headers: assay_id
assay_subcellular_fraction
assay_test_type
assay_tissue
assay_type
assay_cell_type
cell_id
assay_category
description
relationship_type
assay_strain
target_headers: assays_assay_id
assays_assay_subcellular_fraction
assays_assay_test_type
assays_assay_tissue
assays_assay_type
assays_assay_cell_type
assays_cell_id
assays_assay_category
assays_description
assays_relationship_type
assays_assay_strain
column_mappings: assay_id
assays_assay_id
assay_subcellular_fraction
assays_assay_subcellular_fraction
assay_test_type
assays_assay_test_type
assay_tissue
assays_assay_tissue
assay_type
assays_assay_type
assay_cell_type
assays_assay_cell_type
cell_id
assays_cell_id
assay_category
assays_assay_category
description
assays_description
relationship_type
assays_relationship_type
assay_strain
assays_assay_strain
output: {"column_mappings": [["assay_id", "assays_assay_id"], ["assay_subcellular_fraction", "assays_assay_subcellular_fraction"], ["assay_test_type", "assays_assay_test_type"], ["assay_tissue", "assays_assay_tissue"], ["assay_type", "assays_assay_type"], ["assay_cell_type", "assays_assay_cell_type"], ["cell_id", "assays_cell_id"], ["assay_category", "assays_assay_category"], ["description", "assays_description"], ["relationship_type", "assays_relationship_type"], ["assay_strain", "assays_assay_strain"], ["doc_id", null], ["assay_organism", null], ["assay_tax_id", null], ["tid", null], ["confidence_score", null], ["curated_by", null]]}