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 | assay_type   | assay_cell_type   | curated_by   | chembl_id    | assay_test_type   | tissue_id   |    tid | src_assay_id   |   src_id | variant_id   | relationship_type   | description                                                                                 | assay_organism   | assay_subcellular_fraction   | assay_category   | assay_tax_id   | assay_strain   |
|-----------:|---------:|:-------------|:------------------|:-------------|:-------------|:------------------|:------------|-------:|:---------------|---------:|:-------------|:--------------------|:--------------------------------------------------------------------------------------------|:-----------------|:-----------------------------|:-----------------|:---------------|:---------------|
|          1 |    11087 | B            |                   | xut8curation | CHEMBLu15q17 |                   |             |  12052 |                |        1 |              | H                   | Thdcohpo8md3adtestedfortheingitroihmibi6ionofppateket1wlipoxyfenaseatqc9ncentrationof30uj   |                  |                              |                  |                |                |
|          2 |      684 | F            |                   | Aktocufation | fHEMBL61511u |                   |             |  22226 |                |        1 |              | U                   | C0mpoundwasevaljatddforitsability5om9bulizecwlciuhin2w21N7ceils                             |                  |                              |                  |                |                |
|          3 |    15453 | B            |                   | Autocurwt8on | CHEMBo6151w9 |                   |             |  22226 |                |        1 |              | U                   |                                                                                             |                  |                              |                  |                |                |
|          4 |    17841 | B            |                   | Autocurw6ion | fHEhBL615120 |                   |             | 104729 |                |        1 |              | H                   | BindingafcinutyavainstA2adenoqin2receptodknbov8neztriqtalmembranesusihg3yfGS2wu90           | Bostaur7s        |                              |                  | 9913.0         |                |
|          5 |    17430 | F            | 143B              | Intermwdiwte | CHEnBL61512q |                   |             |  80001 |                |        1 |              | N                   | Invigr0celicyti4oxicotyagainet143fcellliheajumanosteosarvomacelllin2                        | Homosa9i2ns      |                              |                  | 9606.0         |                |
|          6 |    17430 | F            | 143B              | Intermedlaye | CHEMBL6251e2 |                   |             |  80001 |                |        1 |              | N                   | Ijvi4rocellcutotoxlcityqgainst143fveillindsHumajosteosarcomsceill9ne                        | Homoswpiwns      |                              |                  | 9606.0         |                |
|          7 |    13799 | F            | 143B              | untermedia6e | CHEjfL615123 |                   |             |  80001 |                |        1 |              | N                   | ChtotoxifActivitywasevaluqtedahaigsh143BTK67jlrcells                                        | M8zmusculus      |                              |                  | 10090.0        |                |
|          8 |    17774 | F            | 143B              | Exlert       | CHEMBLt1y124 |                   |             |  80001 |                |        1 |              | N                   | Invkyrocellsyti48xkcitysasdeterhinefagqinst143Bcellline                                     | Homosa9iena      |                              |                  | 9606.0         |                |
|          9 |     3801 | F            | 143B              | Interjediat2 | CHEMBk6q5125 |                   |             |  80001 |                |        1 |              | N                   | Injinltorgactivktyagaijsttumorist2osars8maxelllknf1r3nafter72hrcon6ihuousexposuretockmpound | Homlzapiens      |                              |                  | 9606.0         |                |
|         10 |    17430 | F            | 143B              | Ihtfrmediate | dHEMBL6q5126 |                   |             |  80001 |                |        1 |              | N                   | Ibvifrixellcytotoxicityagaibst1t3BLfKcelllihesexpr2ssedimHeV1Ti                             | Homoaqpiens      |                              |                  | 9606.0         |                |

TableB:
|   assays_ASI |   assays_DOI | assays_ASST   | assays_ASSCT   | assays_CURAB   | assays_CHEI   | assays_ASTTY   | assays_TII   |   assays_Ti | assays_SASI   |   assays_SRI | assays_VARII   | assays_RELATTY   | assays_Descri                                                                                            | assays_ASSOR      | assays_ASSSUBFRA   | assays_ASTI   |   assays_CONFSC | assays_CEI   | assays_BFOR   |
|-------------:|-------------:|:--------------|:---------------|:---------------|:--------------|:---------------|:-------------|------------:|:--------------|-------------:|:---------------|:-----------------|:---------------------------------------------------------------------------------------------------------|:------------------|:-------------------|:--------------|----------------:|:-------------|:--------------|
|         7524 |         9866 | A             |                | Intermediate   | CHEMBL618647  | In vivo        | 2113.0       |       50597 |               |            1 |                | N                | Biodistribution in normal rat kidney in the presence of 0.005 M Gd/0.01 M lig at 2 hr                    | Rattus norvegicus |                    | Kidney        |               1 |              | BAO_0000218   |
|         7525 |         9866 | A             |                | Intermediate   | CHEMBL618648  | In vivo        | 2113.0       |       50597 |               |            1 |                | N                | Biodistribution in normal rat kidney in the presence of 0.01 M Gd/0.05 M lig                             | Rattus norvegicus |                    | Kidney        |               1 |              | BAO_0000218   |
|         7526 |         9866 | A             |                | Intermediate   | CHEMBL618649  | In vivo        | 2113.0       |       50597 |               |            1 |                | N                | Biodistribution in normal rat kidney in the presence of NAC Gd 0.01 M lig at 2 hr                        | Rattus norvegicus |                    | Kidney        |               1 |              | BAO_0000218   |
|         7527 |         9866 | A             |                | Intermediate   | CHEMBL618650  | In vivo        | 2107.0       |       50597 |               |            1 |                | N                | Biodistribution in normal rat liver in the presence of 0.005 M Gd/0.01 M lig at 2 hr                     | Rattus norvegicus |                    | Liver         |               1 |              | BAO_0000218   |
|         7528 |         9866 | A             |                | Intermediate   | CHEMBL618651  | In vivo        | 2107.0       |       50597 |               |            1 |                | N                | Biodistribution in normal rat liver in the presence of 0.01 M Gd/0.05 M lig                              | Rattus norvegicus |                    | Liver         |               1 |              | BAO_0000218   |
|         7529 |         9866 | A             |                | Intermediate   | CHEMBL876497  | In vivo        | 2107.0       |       50597 |               |            1 |                | N                | Biodistribution in normal rat liver in the presence of NAC Gd 0.01 M lig at 2 hr                         | Rattus norvegicus |                    | Liver         |               1 |              | BAO_0000218   |
|         7530 |         9866 | A             |                | Intermediate   | CHEMBL618652  | In vivo        | 2048.0       |       50597 |               |            1 |                | N                | Biodistribution in normal rat lung in the presence of 0.005 M Gd/0.01 M lig at 2 hr                      | Rattus norvegicus |                    | Lung          |               1 |              | BAO_0000218   |
|         7531 |         9866 | A             |                | Intermediate   | CHEMBL618653  | In vivo        | 2048.0       |       50597 |               |            1 |                | N                | Biodistribution in normal rat lung in the presence of 0.01 M Gd/0.05 M lig                               | Rattus norvegicus |                    | Lung          |               1 |              | BAO_0000218   |
|         7532 |         9866 | A             |                | Intermediate   | CHEMBL618654  | In vivo        | 2048.0       |       50597 |               |            1 |                | N                | Biodistribution in normal rat lung in the presence of NAC Gd 0.01 M lig at 2 hr                          | Rattus norvegicus |                    | Lung          |               1 |              | BAO_0000218   |
|         7533 |         6351 | A             |                | Intermediate   | CHEMBL618655  |                |              |       50597 |               |            1 |                | N                | Recovery rate from urine and bile was determined after iv administration at 20 mg/kg in rats; Not tested | Rattus norvegicus |                    |               |               1 |              | BAO_0000218   |



source_headers: assay_id
doc_id
assay_type
assay_cell_type
curated_by
chembl_id
assay_test_type
tissue_id
tid
src_assay_id
src_id
variant_id
relationship_type
description
assay_organism
assay_subcellular_fraction
target_headers: assays_ASI
assays_DOI
assays_ASST
assays_ASSCT
assays_CURAB
assays_CHEI
assays_ASTTY
assays_TII
assays_Ti
assays_SASI
assays_SRI
assays_VARII
assays_RELATTY
assays_Descri
assays_ASSOR
assays_ASSSUBFRA
column_mappings: assay_id
assays_ASI
doc_id
assays_DOI
assay_type
assays_ASST
assay_cell_type
assays_ASSCT
curated_by
assays_CURAB
chembl_id
assays_CHEI
assay_test_type
assays_ASTTY
tissue_id
assays_TII
tid
assays_Ti
src_assay_id
assays_SASI
src_id
assays_SRI
variant_id
assays_VARII
relationship_type
assays_RELATTY
description
assays_Descri
assay_organism
assays_ASSOR
assay_subcellular_fraction
assays_ASSSUBFRA
output: {"column_mappings": [["assay_id", "assays_ASI"], ["doc_id", "assays_DOI"], ["assay_type", "assays_ASST"], ["assay_cell_type", "assays_ASSCT"], ["curated_by", "assays_CURAB"], ["chembl_id", "assays_CHEI"], ["assay_test_type", "assays_ASTTY"], ["tissue_id", "assays_TII"], ["tid", "assays_Ti"], ["src_assay_id", "assays_SASI"], ["src_id", "assays_SRI"], ["variant_id", "assays_VARII"], ["relationship_type", "assays_RELATTY"], ["description", "assays_Descri"], ["assay_organism", "assays_ASSOR"], ["assay_subcellular_fraction", "assays_ASSSUBFRA"], ["assay_category", null], ["assay_tax_id", null], ["assay_strain", null]]}