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 | relationship_type   | description                                                                                 | variant_id   | assay_organism   | assay_type   | src_assay_id   | bao_format   |   doc_id | assay_test_type   | assay_tax_id   | assay_category   | assay_strain   | assay_tissue   | assay_cell_type   | assay_subcellular_fraction   |    tid |
|-----------:|:--------------------|:--------------------------------------------------------------------------------------------|:-------------|:-----------------|:-------------|:---------------|:-------------|---------:|:------------------|:---------------|:-----------------|:---------------|:---------------|:------------------|:-----------------------------|-------:|
|          1 | H                   | yh4compoundwasresyedfotthe7gv8troinh7bjtiinofplatelet12lipoxygenasextavoncenyrayiojkf30uM   |              |                  | B            |                | BAO9090019   |    11087 |                   |                |                  |                |                |                   |                              |  12052 |
|          2 | U                   | Compoujdwwsefaiuatfdforitsabilitytomobolizevsociumij1321NIvelos                             |              |                  | F            |                | BxO0000319   |      684 |                   |                |                  |                |                |                   |                              |  22226 |
|          3 | U                   |                                                                                             |              |                  | B            |                | BAO000091o   |    15453 |                   |                |                  |                |                |                   |                              |  22226 |
|          4 | H                   | gindingzffinityzgsonarA2arenosin4receptorinbovinwsteiatalmembgandsusing3HCbSw16o0           |              | Bostqurus        | B            |                | BAO000p149   |    17841 |                   | 5369.0         |                  |                |                |                   |                              | 104729 |
|          5 | N                   | Inv9trocellcytotoxici5yavainst143BselklindsHumankst2oxsrxokasellline                        |              | Homoswpienx      | F            |                | BAOo0o0219   |    17430 |                   | 56238.0        |                  |                |                | 143B              |                              |  80001 |
|          6 | N                   | Iggutrocwllcyt0toxici6yagaimwt143BvelllonssHuhanosteosarcomacelllinw                        |              | Homosap7enc      | F            |                | gAO0009219   |    17430 |                   | 67824.0        |                  |                |                | 143B              |                              |  80001 |
|          7 | N                   | CttotoxicActivitydacevwluatwdagzinst243BTKtumprvelks                                        |              | juskusculus      | F            |                | BA000o0219   |    13799 |                   | 4611.0         |                  |                |                | 143B              |                              |  80001 |
|          8 | N                   | Inbitr0cellcytotozicitywasdets4minedxnwunstw43ncellline                                     |              | Hom0sapienz      | F            |                | gA00000219   |    17774 |                   | 5702.0         |                  |                |                | 143B              |                              |  80001 |
|          9 | N                   | Inhibitoryxftivitjagainsttumor8sts8safc8macelllijs143Baftee72hgcomtihuouxexposur2tlcompounc |              | Homiqapiens      | F            |                | nAO00002w9   |     3801 |                   | 2359.0         |                  |                |                | 143B              |                              |  80001 |
|         10 | N                   | Invitroceklcttotoskcityagaijstq43BLTKcellliges2xpressedihHxb1Ti                             |              | Hom9sapiebs      | F            |                | BzO0009219   |    17430 |                   | 17337.0        |                  |                |                | 143B              |                              |  80001 |

TableB:
|   assay_id | relationship_type   | description                                                                                              | variant_id   | assay_organism    | assay_type   | src_assay_id   | bao_format   |   doc_id | assay_test_type   |   assay_tax_id |   confidence_score | curated_by   |   src_id | chembl_id    | cell_id   | tissue_id   |
|-----------:|:--------------------|:---------------------------------------------------------------------------------------------------------|:-------------|:------------------|:-------------|:---------------|:-------------|---------:|:------------------|---------------:|-------------------:|:-------------|---------:|:-------------|:----------|:------------|
|       7524 | N                   | Biodistribution in normal rat kidney in the presence of 0.005 M Gd/0.01 M lig at 2 hr                    |              | Rattus norvegicus | A            |                | BAO_0000218  |     9866 | In vivo           |          10116 |                  1 | Intermediate |        1 | CHEMBL618647 |           | 2113.0      |
|       7525 | N                   | Biodistribution in normal rat kidney in the presence of 0.01 M Gd/0.05 M lig                             |              | Rattus norvegicus | A            |                | BAO_0000218  |     9866 | In vivo           |          10116 |                  1 | Intermediate |        1 | CHEMBL618648 |           | 2113.0      |
|       7526 | N                   | Biodistribution in normal rat kidney in the presence of NAC Gd 0.01 M lig at 2 hr                        |              | Rattus norvegicus | A            |                | BAO_0000218  |     9866 | In vivo           |          10116 |                  1 | Intermediate |        1 | CHEMBL618649 |           | 2113.0      |
|       7527 | N                   | Biodistribution in normal rat liver in the presence of 0.005 M Gd/0.01 M lig at 2 hr                     |              | Rattus norvegicus | A            |                | BAO_0000218  |     9866 | In vivo           |          10116 |                  1 | Intermediate |        1 | CHEMBL618650 |           | 2107.0      |
|       7528 | N                   | Biodistribution in normal rat liver in the presence of 0.01 M Gd/0.05 M lig                              |              | Rattus norvegicus | A            |                | BAO_0000218  |     9866 | In vivo           |          10116 |                  1 | Intermediate |        1 | CHEMBL618651 |           | 2107.0      |
|       7529 | N                   | Biodistribution in normal rat liver in the presence of NAC Gd 0.01 M lig at 2 hr                         |              | Rattus norvegicus | A            |                | BAO_0000218  |     9866 | In vivo           |          10116 |                  1 | Intermediate |        1 | CHEMBL876497 |           | 2107.0      |
|       7530 | N                   | Biodistribution in normal rat lung in the presence of 0.005 M Gd/0.01 M lig at 2 hr                      |              | Rattus norvegicus | A            |                | BAO_0000218  |     9866 | In vivo           |          10116 |                  1 | Intermediate |        1 | CHEMBL618652 |           | 2048.0      |
|       7531 | N                   | Biodistribution in normal rat lung in the presence of 0.01 M Gd/0.05 M lig                               |              | Rattus norvegicus | A            |                | BAO_0000218  |     9866 | In vivo           |          10116 |                  1 | Intermediate |        1 | CHEMBL618653 |           | 2048.0      |
|       7532 | N                   | Biodistribution in normal rat lung in the presence of NAC Gd 0.01 M lig at 2 hr                          |              | Rattus norvegicus | A            |                | BAO_0000218  |     9866 | In vivo           |          10116 |                  1 | Intermediate |        1 | CHEMBL618654 |           | 2048.0      |
|       7533 | N                   | Recovery rate from urine and bile was determined after iv administration at 20 mg/kg in rats; Not tested |              | Rattus norvegicus | A            |                | BAO_0000218  |     6351 |                   |          10116 |                  1 | Intermediate |        1 | CHEMBL618655 |           |             |



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