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_cell_type   | assay_type   | cell_id   | assay_test_type   | description                                                                                 |   confidence_score | src_assay_id   | assay_category   |    tid | assay_tax_id   |   doc_id | assay_organism   | assay_strain   | assay_tissue   | assay_subcellular_fraction   | relationship_type   |
|-----------:|:------------------|:-------------|:----------|:------------------|:--------------------------------------------------------------------------------------------|-------------------:|:---------------|:-----------------|-------:|:---------------|---------:|:-----------------|:---------------|:---------------|:-----------------------------|:--------------------|
|          1 |                   | B            |           |                   | Tjecompoyndwwe6es4edfoghteinvitroinhibitiohiclla54let12lip0xygenaseataconcentrationpf30uM   |                  8 |                |                  |  12052 |                |    11087 |                  |                |                |                              | H                   |
|          2 |                   | F            |           |                   | Compojmdsasevaluatedforltzabilitytomib7iizecaiciumin1321mjcepls                             |                  0 |                |                  |  22226 |                |      684 |                  |                |                |                              | U                   |
|          3 |                   | B            |           |                   |                                                                                             |                  0 |                |                  |  22226 |                |    15453 |                  |                |                |                              | U                   |
|          4 |                   | B            |           |                   | Bindingaffunityagains5Aqadenosunerefe05oeinb9vijds4riatslmembganeauskng3HCGS21680           |                  4 |                |                  | 104729 | 17473.0        |    17841 | Bos taurus       |                |                |                              | H                   |
|          5 | 143B              | F            | 460.0     |                   | Invutrocellcht0t9xic7yysgainat143BcflllunesH7manosteosarcomafeklline                        |                  1 |                |                  |  80001 | 15214.0        |    17430 | Homo sapiens     |                |                |                              | N                   |
|          6 | 143B              | F            | 531.0     |                   | Invihgocflicytogpxicityavainst143BcelllinesHumanosreosa5somzcellllnd                        |                  1 |                |                  |  80001 | 9798.0         |    17430 | Homo sapiens     |                |                |                              | N                   |
|          7 | 143B              | F            | 581.0     |                   | Cyto4ocicActivi6y3asevalhwtwdabxinst143hTKtumorcells                                        |                  1 |                |                  |  80001 | 17370.0        |    13799 | Mus musculus     |                |                |                              | N                   |
|          8 | 143B              | F            | 530.0     |                   | Ijv8trodellcyt0toxicittwasdeterminesagaimet143Bcelopije                                     |                  1 |                |                  |  80001 | 1856.0         |    17774 | Homo sapiens     |                |                |                              | N                   |
|          9 | 143B              | F            | 265.0     |                   | Inhibitoeuavtjdityagainsttuhorost4isardomacrlllinw143Bartfr72hgcontinul6sexpowure4ocompound |                  1 |                |                  |  80001 | 1517.0         |     3801 | Homo sapiens     |                |                |                              | N                   |
|         10 | 143B              | F            | 235.0     |                   | Ijvlhrocellcytotoxicityagainst14evLhKcelllineswdpressedlnHxV2To                             |                  1 |                |                  |  80001 | 15169.0        |    17430 | Homo sapiens     |                |                |                              | N                   |

TableB:
|   assay_id | assay_cell_type   | assay_type   | cell_id   | assay_test_type   | description                                                                                                 |   confidence_score | src_assay_id   | assay_category   |    tid | assay_tax_id   | curated_by   |   src_id | chembl_id    | bao_format   | tissue_id   | variant_id   |
|-----------:|:------------------|:-------------|:----------|:------------------|:------------------------------------------------------------------------------------------------------------|-------------------:|:---------------|:-----------------|-------:|:---------------|:-------------|---------:|:-------------|:-------------|:------------|:-------------|
|          1 |                   | B            |           |                   | The compound was tested for the in vitro inhibition of platelet 12-lipoxygenase at a concentration of 30 uM |                  8 |                |                  |  12052 |                | Autocuration |        1 | CHEMBL615117 | BAO_0000019  |             |              |
|          2 |                   | F            |           |                   | Compound was evaluated for its ability to mobilize calcium in 1321NI cells                                  |                  0 |                |                  |  22226 |                | Autocuration |        1 | CHEMBL615118 | BAO_0000219  |             |              |
|          3 |                   | B            |           |                   |                                                                                                             |                  0 |                |                  |  22226 |                | Autocuration |        1 | CHEMBL615119 | BAO_0000019  |             |              |
|          4 |                   | B            |           |                   | Binding affinity against A2 adenosine receptor in bovine striatal membranes using [3H]CGS-21680             |                  4 |                |                  | 104729 | 9913.0         | Autocuration |        1 | CHEMBL615120 | BAO_0000249  |             |              |
|          5 | 143B              | F            | 163.0     |                   | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          |                  1 |                |                  |  80001 | 9606.0         | Intermediate |        1 | CHEMBL615121 | BAO_0000219  |             |              |
|          6 | 143B              | F            | 163.0     |                   | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          |                  1 |                |                  |  80001 | 9606.0         | Intermediate |        1 | CHEMBL615122 | BAO_0000219  |             |              |
|          7 | 143B              | F            | 163.0     |                   | Cytotoxic Activity was evaluated against 143B (TK-) tumor cells                                             |                  1 |                |                  |  80001 | 10090.0        | Intermediate |        1 | CHEMBL615123 | BAO_0000219  |             |              |
|          8 | 143B              | F            | 163.0     |                   | In vitro cell cytotoxicity was determined against 143B cell line                                            |                  1 |                |                  |  80001 | 9606.0         | Expert       |        1 | CHEMBL615124 | BAO_0000219  |             |              |
|          9 | 143B              | F            | 163.0     |                   | Inhibitory activity against tumor osteosarcoma cell line 143B after 72 hr continuous exposure to compound   |                  1 |                |                  |  80001 | 9606.0         | Intermediate |        1 | CHEMBL615125 | BAO_0000219  |             |              |
|         10 | 143B              | F            | 163.0     |                   | In vitro cell cytotoxicity against 143B-LTK cell lines expressed in HSV-1 TK                                |                  1 |                |                  |  80001 | 9606.0         | Intermediate |        1 | CHEMBL615126 | BAO_0000219  |             |              |



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