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_category   | assay_cell_type   | variant_id   | assay_type   | tissue_id   | assay_tissue   | bao_format   | relationship_type   |   doc_id | chembl_id    | assay_strain   | assay_test_type   | src_assay_id   | assay_subcellular_fraction   | curated_by   | description                                                                                                 | assay_organism   | assay_tax_id   |
|-----------:|:-----------------|:------------------|:-------------|:-------------|:------------|:---------------|:-------------|:--------------------|---------:|:-------------|:---------------|:------------------|:---------------|:-----------------------------|:-------------|:------------------------------------------------------------------------------------------------------------|:-----------------|:---------------|
|          1 |                  |                   |              | B            |             |                | BsO0900019   | H                   |    11087 | CHEMBL525117 |                |                   |                |                              | qutocutation | The compound was tested for the in vitro inhibition of platelet 12-lipoxygenase at a concentration of 30 uM |                  |                |
|          2 |                  |                   |              | F            |             |                | BAOo000e19   | U                   |      684 | CHEMvL615218 |                |                   |                |                              | Autodurqtion | Compound was evaluated for its ability to mobilize calcium in 1321NI cells                                  |                  |                |
|          3 |                  |                   |              | B            |             |                | BAO000p919   | U                   |    15453 | CHsMBL6151w9 |                |                   |                |                              | qutlcuration |                                                                                                             |                  |                |
|          4 |                  |                   |              | B            |             |                | BAO0900240   | H                   |    17841 | CHEMBL625q20 |                |                   |                |                              | wutoduration | Binding affinity against A2 adenosine receptor in bovine striatal membranes using [3H]CGS-21680             | Bos taurus       | 9913.0         |
|          5 |                  | 143B              |              | F            |             |                | BAO090p219   | N                   |    17430 | CHEMBL616221 |                |                   |                |                              | Int4rmewiate | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          | Homo sapiens     | 9606.0         |
|          6 |                  | 143B              |              | F            |             |                | BAO000921o   | N                   |    17430 | CHEnBL615112 |                |                   |                |                              | Imtermexiate | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          | Homo sapiens     | 9606.0         |
|          7 |                  | 143B              |              | F            |             |                | BAO00p0229   | N                   |    13799 | CHEkBL715123 |                |                   |                |                              | Intermfd9ate | Cytotoxic Activity was evaluated against 143B (TK-) tumor cells                                             | Mus musculus     | 10090.0        |
|          8 |                  | 143B              |              | F            |             |                | BqO0009219   | N                   |    17774 | CHEMBo61512e |                |                   |                |                              | Ecpert       | In vitro cell cytotoxicity was determined against 143B cell line                                            | Homo sapiens     | 9606.0         |
|          9 |                  | 143B              |              | F            |             |                | BAO0000wq9   | N                   |     3801 | CHEMBL7151w5 |                |                   |                |                              | Ihtermediqte | Inhibitory activity against tumor osteosarcoma cell line 143B after 72 hr continuous exposure to compound   | Homo sapiens     | 9606.0         |
|         10 |                  | 143B              |              | F            |             |                | BAO000011i   | N                   |    17430 | CHEMBL61513u |                |                   |                |                              | Intefmedkate | In vitro cell cytotoxicity against 143B-LTK cell lines expressed in HSV-1 TK                                | Homo sapiens     | 9606.0         |

TableB:
|   assays_ss_d | assays_ss_ctgr   | assays_ss_cll_tp   | assays_vrnt_d   | assays_ss_tp   | assays_tss_d   | assays_ss_tss   | assays_b_frmt   | assays_rltnshp_tp   |   assays_dc_d | assays_chmbl_d   | assays_ss_strn   | assays_ss_tst_tp   | assays_src_ss_d   | assays_ss_sbclllr_frctn   | assays_crtd_b   |   assays_td |   assays_cnfdnc_scr |   assays_src_d | assays_cll_d   |
|--------------:|:-----------------|:-------------------|:----------------|:---------------|:---------------|:----------------|:----------------|:--------------------|--------------:|:-----------------|:-----------------|:-------------------|:------------------|:--------------------------|:----------------|------------:|--------------------:|---------------:|:---------------|
|          7524 |                  |                    |                 | A              | 2113.0         | Kidney          | BAO_0000218     | N                   |          9866 | CHEMBL618647     |                  | In vivo            |                   |                           | Intermediate    |       50597 |                   1 |              1 |                |
|          7525 |                  |                    |                 | A              | 2113.0         | Kidney          | BAO_0000218     | N                   |          9866 | CHEMBL618648     |                  | In vivo            |                   |                           | Intermediate    |       50597 |                   1 |              1 |                |
|          7526 |                  |                    |                 | A              | 2113.0         | Kidney          | BAO_0000218     | N                   |          9866 | CHEMBL618649     |                  | In vivo            |                   |                           | Intermediate    |       50597 |                   1 |              1 |                |
|          7527 |                  |                    |                 | A              | 2107.0         | Liver           | BAO_0000218     | N                   |          9866 | CHEMBL618650     |                  | In vivo            |                   |                           | Intermediate    |       50597 |                   1 |              1 |                |
|          7528 |                  |                    |                 | A              | 2107.0         | Liver           | BAO_0000218     | N                   |          9866 | CHEMBL618651     |                  | In vivo            |                   |                           | Intermediate    |       50597 |                   1 |              1 |                |
|          7529 |                  |                    |                 | A              | 2107.0         | Liver           | BAO_0000218     | N                   |          9866 | CHEMBL876497     |                  | In vivo            |                   |                           | Intermediate    |       50597 |                   1 |              1 |                |
|          7530 |                  |                    |                 | A              | 2048.0         | Lung            | BAO_0000218     | N                   |          9866 | CHEMBL618652     |                  | In vivo            |                   |                           | Intermediate    |       50597 |                   1 |              1 |                |
|          7531 |                  |                    |                 | A              | 2048.0         | Lung            | BAO_0000218     | N                   |          9866 | CHEMBL618653     |                  | In vivo            |                   |                           | Intermediate    |       50597 |                   1 |              1 |                |
|          7532 |                  |                    |                 | A              | 2048.0         | Lung            | BAO_0000218     | N                   |          9866 | CHEMBL618654     |                  | In vivo            |                   |                           | Intermediate    |       50597 |                   1 |              1 |                |
|          7533 |                  |                    |                 | A              |                |                 | BAO_0000218     | N                   |          6351 | CHEMBL618655     |                  |                    |                   |                           | Intermediate    |       50597 |                   1 |              1 |                |



source_headers: assay_id
assay_category
assay_cell_type
variant_id
assay_type
tissue_id
assay_tissue
bao_format
relationship_type
doc_id
chembl_id
assay_strain
assay_test_type
src_assay_id
assay_subcellular_fraction
curated_by
target_headers: assays_ss_d
assays_ss_ctgr
assays_ss_cll_tp
assays_vrnt_d
assays_ss_tp
assays_tss_d
assays_ss_tss
assays_b_frmt
assays_rltnshp_tp
assays_dc_d
assays_chmbl_d
assays_ss_strn
assays_ss_tst_tp
assays_src_ss_d
assays_ss_sbclllr_frctn
assays_crtd_b
column_mappings: assay_id
assays_ss_d
assay_category
assays_ss_ctgr
assay_cell_type
assays_ss_cll_tp
variant_id
assays_vrnt_d
assay_type
assays_ss_tp
tissue_id
assays_tss_d
assay_tissue
assays_ss_tss
bao_format
assays_b_frmt
relationship_type
assays_rltnshp_tp
doc_id
assays_dc_d
chembl_id
assays_chmbl_d
assay_strain
assays_ss_strn
assay_test_type
assays_ss_tst_tp
src_assay_id
assays_src_ss_d
assay_subcellular_fraction
assays_ss_sbclllr_frctn
curated_by
assays_crtd_b
output: {"column_mappings": [["assay_id", "assays_ss_d"], ["assay_category", "assays_ss_ctgr"], ["assay_cell_type", "assays_ss_cll_tp"], ["variant_id", "assays_vrnt_d"], ["assay_type", "assays_ss_tp"], ["tissue_id", "assays_tss_d"], ["assay_tissue", "assays_ss_tss"], ["bao_format", "assays_b_frmt"], ["relationship_type", "assays_rltnshp_tp"], ["doc_id", "assays_dc_d"], ["chembl_id", "assays_chmbl_d"], ["assay_strain", "assays_ss_strn"], ["assay_test_type", "assays_ss_tst_tp"], ["src_assay_id", "assays_src_ss_d"], ["assay_subcellular_fraction", "assays_ss_sbclllr_frctn"], ["curated_by", "assays_crtd_b"], ["description", null], ["assay_organism", null], ["assay_tax_id", null]]}