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   |    tid | chembl_id    | variant_id   |   src_id | bao_format   | assay_type   | assay_tax_id   | relationship_type   | curated_by   |   doc_id | description                                                                                                 | assay_test_type   | assay_category   | assay_strain   | assay_tissue   |
|-----------:|:-----------------|-------:|:-------------|:-------------|---------:|:-------------|:-------------|:---------------|:--------------------|:-------------|---------:|:------------------------------------------------------------------------------------------------------------|:------------------|:-----------------|:---------------|:---------------|
|          1 |                  |  12052 | CHEMBL615117 |              |        1 | BAO_0000019  | B            |                | H                   | Autocuration |    11087 | The compound was tested for the in vitro inhibition of platelet 12-lipoxygenase at a concentration of 30 uM |                   |                  |                |                |
|          2 |                  |  22226 | CHEMBL615118 |              |        1 | BAO_0000219  | F            |                | U                   | Autocuration |      684 | Compound was evaluated for its ability to mobilize calcium in 1321NI cells                                  |                   |                  |                |                |
|          3 |                  |  22226 | CHEMBL615119 |              |        1 | BAO_0000019  | B            |                | U                   | Autocuration |    15453 |                                                                                                             |                   |                  |                |                |
|          4 | Bos taurus       | 104729 | CHEMBL615120 |              |        1 | BAO_0000249  | B            | 9913.0         | H                   | Autocuration |    17841 | Binding affinity against A2 adenosine receptor in bovine striatal membranes using [3H]CGS-21680             |                   |                  |                |                |
|          5 | Homo sapiens     |  80001 | CHEMBL615121 |              |        1 | BAO_0000219  | F            | 9606.0         | N                   | Intermediate |    17430 | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          |                   |                  |                |                |
|          6 | Homo sapiens     |  80001 | CHEMBL615122 |              |        1 | BAO_0000219  | F            | 9606.0         | N                   | Intermediate |    17430 | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          |                   |                  |                |                |
|          7 | Mus musculus     |  80001 | CHEMBL615123 |              |        1 | BAO_0000219  | F            | 10090.0        | N                   | Intermediate |    13799 | Cytotoxic Activity was evaluated against 143B (TK-) tumor cells                                             |                   |                  |                |                |
|          8 | Homo sapiens     |  80001 | CHEMBL615124 |              |        1 | BAO_0000219  | F            | 9606.0         | N                   | Expert       |    17774 | In vitro cell cytotoxicity was determined against 143B cell line                                            |                   |                  |                |                |
|          9 | Homo sapiens     |  80001 | CHEMBL615125 |              |        1 | BAO_0000219  | F            | 9606.0         | N                   | Intermediate |     3801 | Inhibitory activity against tumor osteosarcoma cell line 143B after 72 hr continuous exposure to compound   |                   |                  |                |                |
|         10 | Homo sapiens     |  80001 | CHEMBL615126 |              |        1 | BAO_0000219  | F            | 9606.0         | N                   | Intermediate |    17430 | In vitro cell cytotoxicity against 143B-LTK cell lines expressed in HSV-1 TK                                |                   |                  |                |                |

TableB:
|   ss_d | ss_rgnsm          |    td | chmbl_d      | vrnt_d   |   src_d | b_frmt      | ss_tp   |   ss_tx_d | rltnshp_tp   | crtd_b       | ss_cll_tp   | ss_sbclllr_frctn   |   cnfdnc_scr | src_ss_d   | cll_d   | tss_d   |
|-------:|:------------------|------:|:-------------|:---------|--------:|:------------|:--------|----------:|:-------------|:-------------|:------------|:-------------------|-------------:|:-----------|:--------|:--------|
|   7524 | Rattus norvegicus | 50597 | CHEMBL618647 |          |       1 | BAO_0000218 | A       |     10116 | N            | Intermediate |             |                    |            1 |            |         | 2113.0  |
|   7525 | Rattus norvegicus | 50597 | CHEMBL618648 |          |       1 | BAO_0000218 | A       |     10116 | N            | Intermediate |             |                    |            1 |            |         | 2113.0  |
|   7526 | Rattus norvegicus | 50597 | CHEMBL618649 |          |       1 | BAO_0000218 | A       |     10116 | N            | Intermediate |             |                    |            1 |            |         | 2113.0  |
|   7527 | Rattus norvegicus | 50597 | CHEMBL618650 |          |       1 | BAO_0000218 | A       |     10116 | N            | Intermediate |             |                    |            1 |            |         | 2107.0  |
|   7528 | Rattus norvegicus | 50597 | CHEMBL618651 |          |       1 | BAO_0000218 | A       |     10116 | N            | Intermediate |             |                    |            1 |            |         | 2107.0  |
|   7529 | Rattus norvegicus | 50597 | CHEMBL876497 |          |       1 | BAO_0000218 | A       |     10116 | N            | Intermediate |             |                    |            1 |            |         | 2107.0  |
|   7530 | Rattus norvegicus | 50597 | CHEMBL618652 |          |       1 | BAO_0000218 | A       |     10116 | N            | Intermediate |             |                    |            1 |            |         | 2048.0  |
|   7531 | Rattus norvegicus | 50597 | CHEMBL618653 |          |       1 | BAO_0000218 | A       |     10116 | N            | Intermediate |             |                    |            1 |            |         | 2048.0  |
|   7532 | Rattus norvegicus | 50597 | CHEMBL618654 |          |       1 | BAO_0000218 | A       |     10116 | N            | Intermediate |             |                    |            1 |            |         | 2048.0  |
|   7533 | Rattus norvegicus | 50597 | CHEMBL618655 |          |       1 | BAO_0000218 | A       |     10116 | N            | Intermediate |             |                    |            1 |            |         |         |



source_headers: assay_id
assay_organism
tid
chembl_id
variant_id
src_id
bao_format
assay_type
assay_tax_id
relationship_type
curated_by
target_headers: ss_d
ss_rgnsm
td
chmbl_d
vrnt_d
src_d
b_frmt
ss_tp
ss_tx_d
rltnshp_tp
crtd_b
column_mappings: assay_id
ss_d
assay_organism
ss_rgnsm
tid
td
chembl_id
chmbl_d
variant_id
vrnt_d
src_id
src_d
bao_format
b_frmt
assay_type
ss_tp
assay_tax_id
ss_tx_d
relationship_type
rltnshp_tp
curated_by
crtd_b
output: {"column_mappings": [["assay_id", "ss_d"], ["assay_organism", "ss_rgnsm"], ["tid", "td"], ["chembl_id", "chmbl_d"], ["variant_id", "vrnt_d"], ["src_id", "src_d"], ["bao_format", "b_frmt"], ["assay_type", "ss_tp"], ["assay_tax_id", "ss_tx_d"], ["relationship_type", "rltnshp_tp"], ["curated_by", "crtd_b"], ["doc_id", null], ["description", null], ["assay_test_type", null], ["assay_category", null], ["assay_strain", null], ["assay_tissue", null]]}