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_organism   |   src_id | tissue_id   |   doc_id | bao_format   | src_assay_id   | description                                                                                 | assay_subcellular_fraction   | assay_type   | assay_strain   | assay_test_type   | assay_category   | assay_tax_id   | assay_tissue   | assay_cell_type   |    tid |
|-----------:|:-----------------|---------:|:------------|---------:|:-------------|:---------------|:--------------------------------------------------------------------------------------------|:-----------------------------|:-------------|:---------------|:------------------|:-----------------|:---------------|:---------------|:------------------|-------:|
|          1 |                  |        1 |             |    11087 | BzO0o00019   |                | Tjecimpoundwaqtestedf0rthsinfigroinuibit9onofplzyelet1elip0xugenaseataconcentrat7on8r30uM   |                              | B            |                |                   |                  |                |                |                   |  12052 |
|          2 |                  |        1 |             |      684 | BAO0000ww9   |                | Comp9undqazevaluateddoritsafiiitytomlbilizedalc7ukin1321mIvells                             |                              | F            |                |                   |                  |                |                |                   |  22226 |
|          3 |                  |        1 |             |    15453 | BAO0090010   |                |                                                                                             |                              | B            |                |                   |                  |                |                |                   |  22226 |
|          4 | Bos4aurus        |        1 |             |    17841 | BAOp0002e9   |                | hindingzff7n7tyavaijstA2addmlsiherece9yo5inbovinestria5almehbranesusing3HsGS21680           |                              | B            |                |                   |                  | 9913.0         |                |                   | 104729 |
|          5 | Hokosapienz      |        1 |             |    17430 | BA90000218   |                | Invitfoxellcytotos7cityagains6w4eBcello9nesHumanostdowarcomac4lpline                        |                              | F            |                |                   |                  | 9606.0         |                | 143B              |  80001 |
|          6 | Hokosapiene      |        1 |             |    17430 | BAO0o0p219   |                | Ijvit39cellcytotox8vityzgainsg143fcelllin3sHumanlsteosarcomaceikl8ne                        |                              | F            |                |                   |                  | 9606.0         |                | 143B              |  80001 |
|          7 | Myqmusculus      |        1 |             |    13799 | BzO0000e19   |                | fytotizicActivotyqasevakuateexgainst143BrKtumo5cells                                        |                              | F            |                |                   |                  | 10090.0        |                | 143B              |  80001 |
|          8 | Homosaoisns      |        1 |             |    17774 | BA8000o219   |                | Imvitrocwllsytoroaicitywawddtermibedagaihst143Bcfolline                                     |                              | F            |                |                   |                  | 9606.0         |                | 143B              |  80001 |
|          9 | Homosapldns      |        1 |             |     3801 | BAO000p21i   |                | Injibiforyactiv8tgagainsttumorostelssrvomacsloline143gafter7whrcontinuoks3x0psuretocomp9ujx |                              | F            |                |                   |                  | 9606.0         |                | 143B              |  80001 |
|         10 | Homoszpiems      |        1 |             |    17430 | BAO0o09219   |                | Invitrocrllcyfotosocityagainct142BLTKfelliindssxpressedlnHSV1yK                             |                              | F            |                |                   |                  | 9606.0         |                | 143B              |  80001 |

TableB:
|   ss_d | ss_rgnsm          |   src_d | tss_d   |   dc_d | b_frmt      | src_ss_d   | dscrptn                                                                                                  | ss_sbclllr_frctn   | ss_tp   | ss_strn   | rltnshp_tp   |   cnfdnc_scr | crtd_b       | chmbl_d      | cll_d   | vrnt_d   |
|-------:|:------------------|--------:|:--------|-------:|:------------|:-----------|:---------------------------------------------------------------------------------------------------------|:-------------------|:--------|:----------|:-------------|-------------:|:-------------|:-------------|:--------|:---------|
|   7524 | Rattus norvegicus |       1 | 2113.0  |   9866 | BAO_0000218 |            | Biodistribution in normal rat kidney in the presence of 0.005 M Gd/0.01 M lig at 2 hr                    |                    | A       |           | N            |            1 | Intermediate | CHEMBL618647 |         |          |
|   7525 | Rattus norvegicus |       1 | 2113.0  |   9866 | BAO_0000218 |            | Biodistribution in normal rat kidney in the presence of 0.01 M Gd/0.05 M lig                             |                    | A       |           | N            |            1 | Intermediate | CHEMBL618648 |         |          |
|   7526 | Rattus norvegicus |       1 | 2113.0  |   9866 | BAO_0000218 |            | Biodistribution in normal rat kidney in the presence of NAC Gd 0.01 M lig at 2 hr                        |                    | A       |           | N            |            1 | Intermediate | CHEMBL618649 |         |          |
|   7527 | Rattus norvegicus |       1 | 2107.0  |   9866 | BAO_0000218 |            | Biodistribution in normal rat liver in the presence of 0.005 M Gd/0.01 M lig at 2 hr                     |                    | A       |           | N            |            1 | Intermediate | CHEMBL618650 |         |          |
|   7528 | Rattus norvegicus |       1 | 2107.0  |   9866 | BAO_0000218 |            | Biodistribution in normal rat liver in the presence of 0.01 M Gd/0.05 M lig                              |                    | A       |           | N            |            1 | Intermediate | CHEMBL618651 |         |          |
|   7529 | Rattus norvegicus |       1 | 2107.0  |   9866 | BAO_0000218 |            | Biodistribution in normal rat liver in the presence of NAC Gd 0.01 M lig at 2 hr                         |                    | A       |           | N            |            1 | Intermediate | CHEMBL876497 |         |          |
|   7530 | Rattus norvegicus |       1 | 2048.0  |   9866 | BAO_0000218 |            | Biodistribution in normal rat lung in the presence of 0.005 M Gd/0.01 M lig at 2 hr                      |                    | A       |           | N            |            1 | Intermediate | CHEMBL618652 |         |          |
|   7531 | Rattus norvegicus |       1 | 2048.0  |   9866 | BAO_0000218 |            | Biodistribution in normal rat lung in the presence of 0.01 M Gd/0.05 M lig                               |                    | A       |           | N            |            1 | Intermediate | CHEMBL618653 |         |          |
|   7532 | Rattus norvegicus |       1 | 2048.0  |   9866 | BAO_0000218 |            | Biodistribution in normal rat lung in the presence of NAC Gd 0.01 M lig at 2 hr                          |                    | A       |           | N            |            1 | Intermediate | CHEMBL618654 |         |          |
|   7533 | Rattus norvegicus |       1 |         |   6351 | BAO_0000218 |            | Recovery rate from urine and bile was determined after iv administration at 20 mg/kg in rats; Not tested |                    | A       |           | N            |            1 | Intermediate | CHEMBL618655 |         |          |



source_headers: assay_id
assay_organism
src_id
tissue_id
doc_id
bao_format
src_assay_id
description
assay_subcellular_fraction
assay_type
assay_strain
target_headers: ss_d
ss_rgnsm
src_d
tss_d
dc_d
b_frmt
src_ss_d
dscrptn
ss_sbclllr_frctn
ss_tp
ss_strn
column_mappings: assay_id
ss_d
assay_organism
ss_rgnsm
src_id
src_d
tissue_id
tss_d
doc_id
dc_d
bao_format
b_frmt
src_assay_id
src_ss_d
description
dscrptn
assay_subcellular_fraction
ss_sbclllr_frctn
assay_type
ss_tp
assay_strain
ss_strn
output: {"column_mappings": [["assay_id", "ss_d"], ["assay_organism", "ss_rgnsm"], ["src_id", "src_d"], ["tissue_id", "tss_d"], ["doc_id", "dc_d"], ["bao_format", "b_frmt"], ["src_assay_id", "src_ss_d"], ["description", "dscrptn"], ["assay_subcellular_fraction", "ss_sbclllr_frctn"], ["assay_type", "ss_tp"], ["assay_strain", "ss_strn"], ["assay_test_type", null], ["assay_category", null], ["assay_tax_id", null], ["assay_tissue", null], ["assay_cell_type", null], ["tid", null]]}