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 |    tid | assay_category   | assay_test_type   |   confidence_score | assay_strain   | relationship_type   | assay_subcellular_fraction   | assay_tissue   | assay_cell_type   | curated_by   | description                                                                                 | assay_type   |   src_id | variant_id   |   doc_id | assay_organism   | assay_tax_id   | src_assay_id   |
|-----------:|-------:|:-----------------|:------------------|-------------------:|:---------------|:--------------------|:-----------------------------|:---------------|:------------------|:-------------|:--------------------------------------------------------------------------------------------|:-------------|---------:|:-------------|---------:|:-----------------|:---------------|:---------------|
|          1 |  12052 |                  |                   |                  8 |                | H                   |                              |                |                   | Aitocurati0n | Thecimpouhdwxstest3dforhh2invittoinhibitioh9fpla4dlet13lip0xtgenaseataconfentrationoc30kM   | B            |        1 |              |    11087 |                  |                |                |
|          2 |  22226 |                  |                   |                  0 |                | U                   |                              |                |                   | Autlcurarion | Conpoumdwasdvaiuatedeor8tssbilityt0mobil9zecaiciuhin1321NIcelis                             | F            |        1 |              |      684 |                  |                |                |
|          3 |  22226 |                  |                   |                  0 |                | U                   |                              |                |                   | qutocurayion |                                                                                             | B            |        1 |              |    15453 |                  |                |                |
|          4 | 104729 |                  |                   |                  4 |                | H                   |                              |                |                   | Autociratkon | nindingaffinigyagainats2zdenosiner4ceoto4ingovinestrua6apmenbranesjsigg3HCtS21680           | B            |        1 |              |    17841 | Bos taurus       | 9913.0         |                |
|          5 |  80001 |                  |                   |                  1 |                | N                   |                              |                | 143B              | Intermfdiwte | Ingifricellxytotox8cityagains4144Bfelllinezuumanost2isarcomacelllibe                        | F            |        1 |              |    17430 | Homo sapiens     | 9606.0         |                |
|          6 |  80001 |                  |                   |                  1 |                | N                   |                              |                | 143B              | Intetmediatw | Invitrocellcjtotoaicityayainst143fselllinesmunanosteosarconsveill8ns                        | F            |        1 |              |    17430 | Homo sapiens     | 9606.0         |                |
|          7 |  80001 |                  |                   |                  1 |                | N                   |                              |                | 143B              | 7n5ermediate | CytotoaicActig7ty2asecaluafedagaindt143BhKrumircells                                        | F            |        1 |              |    13799 | Mus musculus     | 10090.0        |                |
|          8 |  80001 |                  |                   |                  1 |                | N                   |                              |                | 143B              | Expsrt       | Invitroceplc6totoxiditywasxfredmlnedafalnsh143Bcellline                                     | F            |        1 |              |    17774 | Homo sapiens     | 9606.0         |                |
|          9 |  80001 |                  |                   |                  1 |                | N                   |                              |                | 143B              | Intermsdiatf | Inhibiyiryactlvityagainsttumpr0steoxarconxcelpllne1r3Bwfyf372hrcontinuo7xedposuretocompound | F            |        1 |              |     3801 | Homo sapiens     | 9606.0         |                |
|         10 |  80001 |                  |                   |                  1 |                | N                   |                              |                | 143B              | Intermecizte | Ibvitr0cellfytot9xidityagxinst143BL5Kcelll7nfsezprfssedimHSV1TK                             | F            |        1 |              |    17430 | Homo sapiens     | 9606.0         |                |

TableB:
|   assays_ss_d |   assays_td | assays_ss_ctgr   | assays_ss_tst_tp   |   assays_cnfdnc_scr | assays_ss_strn   | assays_rltnshp_tp   | assays_ss_sbclllr_frctn   | assays_ss_tss   | assays_ss_cll_tp   | assays_crtd_b   | assays_dscrptn                                                                                              | assays_ss_tp   |   assays_src_d | assays_vrnt_d   |   assays_dc_d | assays_chmbl_d   | assays_cll_d   | assays_b_frmt   | assays_tss_d   |
|--------------:|------------:|:-----------------|:-------------------|--------------------:|:-----------------|:--------------------|:--------------------------|:----------------|:-------------------|:----------------|:------------------------------------------------------------------------------------------------------------|:---------------|---------------:|:----------------|--------------:|:-----------------|:---------------|:----------------|:---------------|
|             1 |       12052 |                  |                    |                   8 |                  | H                   |                           |                 |                    | Autocuration    | The compound was tested for the in vitro inhibition of platelet 12-lipoxygenase at a concentration of 30 uM | B              |              1 |                 |         11087 | CHEMBL615117     |                | BAO_0000019     |                |
|             2 |       22226 |                  |                    |                   0 |                  | U                   |                           |                 |                    | Autocuration    | Compound was evaluated for its ability to mobilize calcium in 1321NI cells                                  | F              |              1 |                 |           684 | CHEMBL615118     |                | BAO_0000219     |                |
|             3 |       22226 |                  |                    |                   0 |                  | U                   |                           |                 |                    | Autocuration    |                                                                                                             | B              |              1 |                 |         15453 | CHEMBL615119     |                | BAO_0000019     |                |
|             4 |      104729 |                  |                    |                   4 |                  | H                   |                           |                 |                    | Autocuration    | Binding affinity against A2 adenosine receptor in bovine striatal membranes using [3H]CGS-21680             | B              |              1 |                 |         17841 | CHEMBL615120     |                | BAO_0000249     |                |
|             5 |       80001 |                  |                    |                   1 |                  | N                   |                           |                 | 143B               | Intermediate    | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          | F              |              1 |                 |         17430 | CHEMBL615121     | 163.0          | BAO_0000219     |                |
|             6 |       80001 |                  |                    |                   1 |                  | N                   |                           |                 | 143B               | Intermediate    | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          | F              |              1 |                 |         17430 | CHEMBL615122     | 163.0          | BAO_0000219     |                |
|             7 |       80001 |                  |                    |                   1 |                  | N                   |                           |                 | 143B               | Intermediate    | Cytotoxic Activity was evaluated against 143B (TK-) tumor cells                                             | F              |              1 |                 |         13799 | CHEMBL615123     | 163.0          | BAO_0000219     |                |
|             8 |       80001 |                  |                    |                   1 |                  | N                   |                           |                 | 143B               | Expert          | In vitro cell cytotoxicity was determined against 143B cell line                                            | F              |              1 |                 |         17774 | CHEMBL615124     | 163.0          | BAO_0000219     |                |
|             9 |       80001 |                  |                    |                   1 |                  | N                   |                           |                 | 143B               | Intermediate    | Inhibitory activity against tumor osteosarcoma cell line 143B after 72 hr continuous exposure to compound   | F              |              1 |                 |          3801 | CHEMBL615125     | 163.0          | BAO_0000219     |                |
|            10 |       80001 |                  |                    |                   1 |                  | N                   |                           |                 | 143B               | Intermediate    | In vitro cell cytotoxicity against 143B-LTK cell lines expressed in HSV-1 TK                                | F              |              1 |                 |         17430 | CHEMBL615126     | 163.0          | BAO_0000219     |                |



source_headers: assay_id
tid
assay_category
assay_test_type
confidence_score
assay_strain
relationship_type
assay_subcellular_fraction
assay_tissue
assay_cell_type
curated_by
description
assay_type
src_id
variant_id
doc_id
target_headers: assays_ss_d
assays_td
assays_ss_ctgr
assays_ss_tst_tp
assays_cnfdnc_scr
assays_ss_strn
assays_rltnshp_tp
assays_ss_sbclllr_frctn
assays_ss_tss
assays_ss_cll_tp
assays_crtd_b
assays_dscrptn
assays_ss_tp
assays_src_d
assays_vrnt_d
assays_dc_d
column_mappings: assay_id
assays_ss_d
tid
assays_td
assay_category
assays_ss_ctgr
assay_test_type
assays_ss_tst_tp
confidence_score
assays_cnfdnc_scr
assay_strain
assays_ss_strn
relationship_type
assays_rltnshp_tp
assay_subcellular_fraction
assays_ss_sbclllr_frctn
assay_tissue
assays_ss_tss
assay_cell_type
assays_ss_cll_tp
curated_by
assays_crtd_b
description
assays_dscrptn
assay_type
assays_ss_tp
src_id
assays_src_d
variant_id
assays_vrnt_d
doc_id
assays_dc_d
output: {"column_mappings": [["assay_id", "assays_ss_d"], ["tid", "assays_td"], ["assay_category", "assays_ss_ctgr"], ["assay_test_type", "assays_ss_tst_tp"], ["confidence_score", "assays_cnfdnc_scr"], ["assay_strain", "assays_ss_strn"], ["relationship_type", "assays_rltnshp_tp"], ["assay_subcellular_fraction", "assays_ss_sbclllr_frctn"], ["assay_tissue", "assays_ss_tss"], ["assay_cell_type", "assays_ss_cll_tp"], ["curated_by", "assays_crtd_b"], ["description", "assays_dscrptn"], ["assay_type", "assays_ss_tp"], ["src_id", "assays_src_d"], ["variant_id", "assays_vrnt_d"], ["doc_id", "assays_dc_d"], ["assay_organism", null], ["assay_tax_id", null], ["src_assay_id", null]]}