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_tax_id   | variant_id   |   confidence_score | relationship_type   | chembl_id    |   src_id |   doc_id | assay_organism   | assay_type   | description                                                                                                 | assay_test_type   | assay_category   | assay_strain   | assay_tissue   | assay_cell_type   |
|-----------:|-------:|:---------------|:-------------|-------------------:|:--------------------|:-------------|---------:|---------:|:-----------------|:-------------|:------------------------------------------------------------------------------------------------------------|:------------------|:-----------------|:---------------|:---------------|:------------------|
|          1 |  12052 |                |              |                  8 | H                   | CtEMBL615217 |        1 |    11087 |                  | B            | The compound was tested for the in vitro inhibition of platelet 12-lipoxygenase at a concentration of 30 uM |                   |                  |                |                |                   |
|          2 |  22226 |                |              |                  0 | U                   | CHEMBL61512i |        1 |      684 |                  | F            | Compound was evaluated for its ability to mobilize calcium in 1321NI cells                                  |                   |                  |                |                |                   |
|          3 |  22226 |                |              |                  0 | U                   | CHEMBLy1511p |        1 |    15453 |                  | B            |                                                                                                             |                   |                  |                |                |                   |
|          4 | 104729 | 8429.0         |              |                  4 | H                   | CHEMBL615230 |        1 |    17841 | Bistaurus        | B            | Binding affinity against A2 adenosine receptor in bovine striatal membranes using [3H]CGS-21680             |                   |                  |                |                |                   |
|          5 |  80001 | 32444.0        |              |                  1 | N                   | CHEMgL515121 |        1 |    17430 | Homosa0kens      | F            | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          |                   |                  |                |                | 143B              |
|          6 |  80001 | 9791.0         |              |                  1 | N                   | CnEMBL61512q |        1 |    17430 | Homoqapkens      | F            | In vitro cell cytotoxicity against 143-B cell lines (Human osteosarcoma cell line)                          |                   |                  |                |                | 143B              |
|          7 |  80001 | 33291.0        |              |                  1 | N                   | CHEMBi61512e |        1 |    13799 | jusmuzculus      | F            | Cytotoxic Activity was evaluated against 143B (TK-) tumor cells                                             |                   |                  |                |                | 143B              |
|          8 |  80001 | 22803.0        |              |                  1 | N                   | CH3MBL615q24 |        1 |    17774 | bomosapoens      | F            | In vitro cell cytotoxicity was determined against 143B cell line                                            |                   |                  |                |                | 143B              |
|          9 |  80001 | 11340.0        |              |                  1 | N                   | CHEjBLt15125 |        1 |     3801 | Homosaoi4ns      | F            | Inhibitory activity against tumor osteosarcoma cell line 143B after 72 hr continuous exposure to compound   |                   |                  |                |                | 143B              |
|         10 |  80001 | 42930.0        |              |                  1 | N                   | CHEMhL615q26 |        1 |    17430 | H0mosapiebs      | F            | In vitro cell cytotoxicity against 143B-LTK cell lines expressed in HSV-1 TK                                |                   |                  |                |                | 143B              |

TableB:
|   ASSI |      T | ASSTAI   | VARII   |   CONFISC | RELATT   | CHEI         |   SI |   DOI | ASSORGA      | ASTY   | ASSUBCELFRAC   | CURAB        | SASI   | CI    | BAFO        | TISI   |
|-------:|-------:|:---------|:--------|----------:|:---------|:-------------|-----:|------:|:-------------|:-------|:---------------|:-------------|:-------|:------|:------------|:-------|
|      1 |  12052 |          |         |         8 | H        | CHEMBL615117 |    1 | 11087 |              | B      |                | Autocuration |        |       | BAO_0000019 |        |
|      2 |  22226 |          |         |         0 | U        | CHEMBL615118 |    1 |   684 |              | F      |                | Autocuration |        |       | BAO_0000219 |        |
|      3 |  22226 |          |         |         0 | U        | CHEMBL615119 |    1 | 15453 |              | B      |                | Autocuration |        |       | BAO_0000019 |        |
|      4 | 104729 | 9913.0   |         |         4 | H        | CHEMBL615120 |    1 | 17841 | Bos taurus   | B      |                | Autocuration |        |       | BAO_0000249 |        |
|      5 |  80001 | 9606.0   |         |         1 | N        | CHEMBL615121 |    1 | 17430 | Homo sapiens | F      |                | Intermediate |        | 163.0 | BAO_0000219 |        |
|      6 |  80001 | 9606.0   |         |         1 | N        | CHEMBL615122 |    1 | 17430 | Homo sapiens | F      |                | Intermediate |        | 163.0 | BAO_0000219 |        |
|      7 |  80001 | 10090.0  |         |         1 | N        | CHEMBL615123 |    1 | 13799 | Mus musculus | F      |                | Intermediate |        | 163.0 | BAO_0000219 |        |
|      8 |  80001 | 9606.0   |         |         1 | N        | CHEMBL615124 |    1 | 17774 | Homo sapiens | F      |                | Expert       |        | 163.0 | BAO_0000219 |        |
|      9 |  80001 | 9606.0   |         |         1 | N        | CHEMBL615125 |    1 |  3801 | Homo sapiens | F      |                | Intermediate |        | 163.0 | BAO_0000219 |        |
|     10 |  80001 | 9606.0   |         |         1 | N        | CHEMBL615126 |    1 | 17430 | Homo sapiens | F      |                | Intermediate |        | 163.0 | BAO_0000219 |        |



source_headers: assay_id
tid
assay_tax_id
variant_id
confidence_score
relationship_type
chembl_id
src_id
doc_id
assay_organism
assay_type
target_headers: ASSI
T
ASSTAI
VARII
CONFISC
RELATT
CHEI
SI
DOI
ASSORGA
ASTY
column_mappings: assay_id
ASSI
tid
T
assay_tax_id
ASSTAI
variant_id
VARII
confidence_score
CONFISC
relationship_type
RELATT
chembl_id
CHEI
src_id
SI
doc_id
DOI
assay_organism
ASSORGA
assay_type
ASTY
output: {"column_mappings": [["assay_id", "ASSI"], ["tid", "T"], ["assay_tax_id", "ASSTAI"], ["variant_id", "VARII"], ["confidence_score", "CONFISC"], ["relationship_type", "RELATT"], ["chembl_id", "CHEI"], ["src_id", "SI"], ["doc_id", "DOI"], ["assay_organism", "ASSORGA"], ["assay_type", "ASTY"], ["description", null], ["assay_test_type", null], ["assay_category", null], ["assay_strain", null], ["assay_tissue", null], ["assay_cell_type", null]]}