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

TableB:
|   assays_ASI | assays_CURAB   |   assays_Ti | assays_ASSTI   | assays_ASSCA   | assays_Descr                                                                                                | assays_RELATT   |   assays_CONSC |   assays_SRI | assays_SASSI   | assays_CHI   | assays_CI   | assays_BAFO   | assays_TII   | assays_VAI   |
|-------------:|:---------------|------------:|:---------------|:---------------|:------------------------------------------------------------------------------------------------------------|:----------------|---------------:|-------------:|:---------------|:-------------|:------------|:--------------|:-------------|:-------------|
|            1 | Autocuration   |       12052 |                |                | The compound was tested for the in vitro inhibition of platelet 12-lipoxygenase at a concentration of 30 uM | H               |              8 |            1 |                | CHEMBL615117 |             | BAO_0000019   |              |              |
|            2 | Autocuration   |       22226 |                |                | Compound was evaluated for its ability to mobilize calcium in 1321NI cells                                  | U               |              0 |            1 |                | CHEMBL615118 |             | BAO_0000219   |              |              |
|            3 | Autocuration   |       22226 |                |                |                                                                                                             | U               |              0 |            1 |                | CHEMBL615119 |             | BAO_0000019   |              |              |
|            4 | Autocuration   |      104729 |                |                | Binding affinity against A2 adenosine receptor in bovine striatal membranes using [3H]CGS-21680             | H               |              4 |            1 |                | CHEMBL615120 |             | BAO_0000249   |              |              |
|            5 | Intermediate   |       80001 |                |                | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          | N               |              1 |            1 |                | CHEMBL615121 | 163.0       | BAO_0000219   |              |              |
|            6 | Intermediate   |       80001 |                |                | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          | N               |              1 |            1 |                | CHEMBL615122 | 163.0       | BAO_0000219   |              |              |
|            7 | Intermediate   |       80001 |                |                | Cytotoxic Activity was evaluated against 143B (TK-) tumor cells                                             | N               |              1 |            1 |                | CHEMBL615123 | 163.0       | BAO_0000219   |              |              |
|            8 | Expert         |       80001 |                |                | In vitro cell cytotoxicity was determined against 143B cell line                                            | N               |              1 |            1 |                | CHEMBL615124 | 163.0       | BAO_0000219   |              |              |
|            9 | Intermediate   |       80001 |                |                | Inhibitory activity against tumor osteosarcoma cell line 143B after 72 hr continuous exposure to compound   | N               |              1 |            1 |                | CHEMBL615125 | 163.0       | BAO_0000219   |              |              |
|           10 | Intermediate   |       80001 |                |                | In vitro cell cytotoxicity against 143B-LTK cell lines expressed in HSV-1 TK                                | N               |              1 |            1 |                | CHEMBL615126 | 163.0       | BAO_0000219   |              |              |



source_headers: assay_id
curated_by
tid
assay_tissue
assay_category
description
target_headers: assays_ASI
assays_CURAB
assays_Ti
assays_ASSTI
assays_ASSCA
assays_Descr
column_mappings: assay_id
assays_ASI
curated_by
assays_CURAB
tid
assays_Ti
assay_tissue
assays_ASSTI
assay_category
assays_ASSCA
description
assays_Descr
output: {"column_mappings": [["assay_id", "assays_ASI"], ["curated_by", "assays_CURAB"], ["tid", "assays_Ti"], ["assay_tissue", "assays_ASSTI"], ["assay_category", "assays_ASSCA"], ["description", "assays_Descr"], ["doc_id", null], ["assay_type", null], ["assay_test_type", null], ["assay_organism", null], ["assay_tax_id", null], ["assay_strain", null], ["assay_cell_type", null], ["assay_subcellular_fraction", null]]}