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 |   doc_id | description                                                                                                 | assay_type   | assay_test_type   | assay_category   | assay_organism   | assay_tax_id   | assay_strain   | assay_tissue   | assay_cell_type   | assay_subcellular_fraction   |    tid | relationship_type   |   confidence_score | curated_by   |   src_id | src_assay_id   | chembl_id    | cell_id   | bao_format   | tissue_id   | variant_id   |
|-----------:|---------:|:------------------------------------------------------------------------------------------------------------|:-------------|:------------------|:-----------------|:-----------------|:---------------|:---------------|:---------------|:------------------|:-----------------------------|-------:|:--------------------|-------------------:|:-------------|---------:|:---------------|:-------------|:----------|:-------------|:------------|:-------------|
|          1 |    11087 | The compound was tested for the in vitro inhibition of platelet 12-lipoxygenase at a concentration of 30 uM | B            |                   |                  |                  |                |                |                |                   |                              |  12052 | H                   |                  8 | Autocuration |        1 |                | CHEMBL615117 |           | BAO_0000019  |             |              |
|          2 |      684 | Compound was evaluated for its ability to mobilize calcium in 1321NI cells                                  | F            |                   |                  |                  |                |                |                |                   |                              |  22226 | U                   |                  0 | Autocuration |        1 |                | CHEMBL615118 |           | BAO_0000219  |             |              |
|          3 |    15453 |                                                                                                             | B            |                   |                  |                  |                |                |                |                   |                              |  22226 | U                   |                  0 | Autocuration |        1 |                | CHEMBL615119 |           | BAO_0000019  |             |              |
|          4 |    17841 | Binding affinity against A2 adenosine receptor in bovine striatal membranes using [3H]CGS-21680             | B            |                   |                  | Bos taurus       | 9913.0         |                |                |                   |                              | 104729 | H                   |                  4 | Autocuration |        1 |                | CHEMBL615120 |           | BAO_0000249  |             |              |
|          5 |    17430 | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          | F            |                   |                  | Homo sapiens     | 9606.0         |                |                | 143B              |                              |  80001 | N                   |                  1 | Intermediate |        1 |                | CHEMBL615121 | 163.0     | BAO_0000219  |             |              |
|          6 |    17430 | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          | F            |                   |                  | Homo sapiens     | 9606.0         |                |                | 143B              |                              |  80001 | N                   |                  1 | Intermediate |        1 |                | CHEMBL615122 | 163.0     | BAO_0000219  |             |              |
|          7 |    13799 | Cytotoxic Activity was evaluated against 143B (TK-) tumor cells                                             | F            |                   |                  | Mus musculus     | 10090.0        |                |                | 143B              |                              |  80001 | N                   |                  1 | Intermediate |        1 |                | CHEMBL615123 | 163.0     | BAO_0000219  |             |              |
|          8 |    17774 | In vitro cell cytotoxicity was determined against 143B cell line                                            | F            |                   |                  | Homo sapiens     | 9606.0         |                |                | 143B              |                              |  80001 | N                   |                  1 | Expert       |        1 |                | CHEMBL615124 | 163.0     | BAO_0000219  |             |              |
|          9 |     3801 | Inhibitory activity against tumor osteosarcoma cell line 143B after 72 hr continuous exposure to compound   | F            |                   |                  | Homo sapiens     | 9606.0         |                |                | 143B              |                              |  80001 | N                   |                  1 | Intermediate |        1 |                | CHEMBL615125 | 163.0     | BAO_0000219  |             |              |
|         10 |    17430 | In vitro cell cytotoxicity against 143B-LTK cell lines expressed in HSV-1 TK                                | F            |                   |                  | Homo sapiens     | 9606.0         |                |                | 143B              |                              |  80001 | N                   |                  1 | Intermediate |        1 |                | CHEMBL615126 | 163.0     | BAO_0000219  |             |              |

TableB:
|   assays_ASSI |   assays_DOI | assays_Des                                                                                               | assays_ASST   | assays_ASSTT   | assays_ASSCA   | assays_ASOR       |   assays_ASTAI | assays_ASSTR   | assays_ASSTIS   | assays_ASCTY   | assays_ASSSUBCELFR   |   assays_T | assays_RELATITY   |   assays_CONSCO | assays_CUB   |   assays_SI | assays_SRASI   | assays_CHEI   | assays_CEI   | assays_BFOR   | assays_TISI   | assays_VARI   |
|--------------:|-------------:|:---------------------------------------------------------------------------------------------------------|:--------------|:---------------|:---------------|:------------------|---------------:|:---------------|:----------------|:---------------|:---------------------|-----------:|:------------------|----------------:|:-------------|------------:|:---------------|:--------------|:-------------|:--------------|:--------------|:--------------|
|          7524 |         9866 | Biodistribution in normal rat kidney in the presence of 0.005 M Gd/0.01 M lig at 2 hr                    | A             | In vivo        |                | Rattus norvegicus |          10116 |                | Kidney          |                |                      |      50597 | N                 |               1 | Intermediate |           1 |                | CHEMBL618647  |              | BAO_0000218   | 2113.0        |               |
|          7525 |         9866 | Biodistribution in normal rat kidney in the presence of 0.01 M Gd/0.05 M lig                             | A             | In vivo        |                | Rattus norvegicus |          10116 |                | Kidney          |                |                      |      50597 | N                 |               1 | Intermediate |           1 |                | CHEMBL618648  |              | BAO_0000218   | 2113.0        |               |
|          7526 |         9866 | Biodistribution in normal rat kidney in the presence of NAC Gd 0.01 M lig at 2 hr                        | A             | In vivo        |                | Rattus norvegicus |          10116 |                | Kidney          |                |                      |      50597 | N                 |               1 | Intermediate |           1 |                | CHEMBL618649  |              | BAO_0000218   | 2113.0        |               |
|          7527 |         9866 | Biodistribution in normal rat liver in the presence of 0.005 M Gd/0.01 M lig at 2 hr                     | A             | In vivo        |                | Rattus norvegicus |          10116 |                | Liver           |                |                      |      50597 | N                 |               1 | Intermediate |           1 |                | CHEMBL618650  |              | BAO_0000218   | 2107.0        |               |
|          7528 |         9866 | Biodistribution in normal rat liver in the presence of 0.01 M Gd/0.05 M lig                              | A             | In vivo        |                | Rattus norvegicus |          10116 |                | Liver           |                |                      |      50597 | N                 |               1 | Intermediate |           1 |                | CHEMBL618651  |              | BAO_0000218   | 2107.0        |               |
|          7529 |         9866 | Biodistribution in normal rat liver in the presence of NAC Gd 0.01 M lig at 2 hr                         | A             | In vivo        |                | Rattus norvegicus |          10116 |                | Liver           |                |                      |      50597 | N                 |               1 | Intermediate |           1 |                | CHEMBL876497  |              | BAO_0000218   | 2107.0        |               |
|          7530 |         9866 | Biodistribution in normal rat lung in the presence of 0.005 M Gd/0.01 M lig at 2 hr                      | A             | In vivo        |                | Rattus norvegicus |          10116 |                | Lung            |                |                      |      50597 | N                 |               1 | Intermediate |           1 |                | CHEMBL618652  |              | BAO_0000218   | 2048.0        |               |
|          7531 |         9866 | Biodistribution in normal rat lung in the presence of 0.01 M Gd/0.05 M lig                               | A             | In vivo        |                | Rattus norvegicus |          10116 |                | Lung            |                |                      |      50597 | N                 |               1 | Intermediate |           1 |                | CHEMBL618653  |              | BAO_0000218   | 2048.0        |               |
|          7532 |         9866 | Biodistribution in normal rat lung in the presence of NAC Gd 0.01 M lig at 2 hr                          | A             | In vivo        |                | Rattus norvegicus |          10116 |                | Lung            |                |                      |      50597 | N                 |               1 | Intermediate |           1 |                | CHEMBL618654  |              | BAO_0000218   | 2048.0        |               |
|          7533 |         6351 | Recovery rate from urine and bile was determined after iv administration at 20 mg/kg in rats; Not tested | A             |                |                | Rattus norvegicus |          10116 |                |                 |                |                      |      50597 | N                 |               1 | Intermediate |           1 |                | CHEMBL618655  |              | BAO_0000218   |               |               |



source_headers: assay_id
doc_id
description
assay_type
assay_test_type
assay_category
assay_organism
assay_tax_id
assay_strain
assay_tissue
assay_cell_type
assay_subcellular_fraction
tid
relationship_type
confidence_score
curated_by
src_id
src_assay_id
chembl_id
cell_id
bao_format
tissue_id
variant_id
target_headers: assays_ASSI
assays_DOI
assays_Des
assays_ASST
assays_ASSTT
assays_ASSCA
assays_ASOR
assays_ASTAI
assays_ASSTR
assays_ASSTIS
assays_ASCTY
assays_ASSSUBCELFR
assays_T
assays_RELATITY
assays_CONSCO
assays_CUB
assays_SI
assays_SRASI
assays_CHEI
assays_CEI
assays_BFOR
assays_TISI
assays_VARI
column_mappings: assay_id
assays_ASSI
doc_id
assays_DOI
description
assays_Des
assay_type
assays_ASST
assay_test_type
assays_ASSTT
assay_category
assays_ASSCA
assay_organism
assays_ASOR
assay_tax_id
assays_ASTAI
assay_strain
assays_ASSTR
assay_tissue
assays_ASSTIS
assay_cell_type
assays_ASCTY
assay_subcellular_fraction
assays_ASSSUBCELFR
tid
assays_T
relationship_type
assays_RELATITY
confidence_score
assays_CONSCO
curated_by
assays_CUB
src_id
assays_SI
src_assay_id
assays_SRASI
chembl_id
assays_CHEI
cell_id
assays_CEI
bao_format
assays_BFOR
tissue_id
assays_TISI
variant_id
assays_VARI
output: {"column_mappings": [["assay_id", "assays_ASSI"], ["doc_id", "assays_DOI"], ["description", "assays_Des"], ["assay_type", "assays_ASST"], ["assay_test_type", "assays_ASSTT"], ["assay_category", "assays_ASSCA"], ["assay_organism", "assays_ASOR"], ["assay_tax_id", "assays_ASTAI"], ["assay_strain", "assays_ASSTR"], ["assay_tissue", "assays_ASSTIS"], ["assay_cell_type", "assays_ASCTY"], ["assay_subcellular_fraction", "assays_ASSSUBCELFR"], ["tid", "assays_T"], ["relationship_type", "assays_RELATITY"], ["confidence_score", "assays_CONSCO"], ["curated_by", "assays_CUB"], ["src_id", "assays_SI"], ["src_assay_id", "assays_SRASI"], ["chembl_id", "assays_CHEI"], ["cell_id", "assays_CEI"], ["bao_format", "assays_BFOR"], ["tissue_id", "assays_TISI"], ["variant_id", "assays_VARI"]]}