Task: Data-transform-reshape (source dataset: Auto-Tables)

Given a table, predict what python pandas transformation may be needed on the given input table. Valid choices for transformation include: {"stack", "wide_to_long", "transpose", "pivot", "explode", "ffill", "subtitles"}. Note that each of these is a common Python Pandas operator. Some transformations can have parameters. Each transformation and its parameters are describe as follows.
 
- stack: collapse homogeneous cols into rows.
@param (int): stack_start_idx: zero-based starting column index of the homogeneous column-group.
@param (int): stack_end_idx: zero-based ending column index of the homogeneous column-group.
 
- wide_to_long: collapse repeating col-groups into rows.
@param (int): wide_to_long_start_idx: zero-based starting column index of the repeating col-groups.
@param (int): wide_to_long_end_idx: zero-based ending column index of the repeating col-groups.
 
- transpose: convert rows to columns and vice versa.
 
- pivot: pivot repeating row-groups into cols.
@param (int): pivot_row_frequency: frequency of repeating row-groups.
 
- ffill: fill structurally empty cells in tables.
@param (int): ffill_end_idx: zero-based ending column index of the columns to be filled.
 
- explode: convert composite cells into atomic values
@param (int): explode_column_idx: zero-based column index of the column to be exploded.
 
- subtitle: convert table subtitles into a column.
 
OUTPUT the predicted transformation name along with its parameters for the given INPUT table in a JSON, e.g., {"transformation": "stack", "stack_start_idx": 1, "stack_end_idx": 5}. If the input table needs multi-step transformations (e.g, ffill followed by stack), list JSON of each transformation sequentially in a list, e.g., [{"transformation": "ffill", "ffill_end_idx": 1}, {"transformation": "stack", "stack_start_idx": 1, "stack_end_idx": 5}]. No explanation is needed.

## Input:
| Drug name    | Common brand names*                                                                   | Year approved (US FDA)   | Elimination half-life (h)† [active metabolite]   | Therapeutic use        |
|:-------------|:--------------------------------------------------------------------------------------|:-------------------------|:-------------------------------------------------|:-----------------------|
| DMCM         | ?                                                                                     |                          | ?                                                | anxiogenic, convulsant |
| Flumazenil** | Anexate, Lanexat, Mazicon, Romazicon                                                  |                          | 1 hour                                           | antidote               |
| Eszopiclone§ | Lunesta                                                                               | 2004.0                   | 6 hours                                          | hypnotic               |
| Zaleplon§    | Sonata, Starnoc                                                                       | 1999.0                   | 1 hour                                           | hypnotic               |
| Zolpidem§    | Ambien, Nytamel, Sanval, Stilnoct, Stilnox, Sublinox (Canada), Xolnox, Zoldem, Zolnod | 1992.0                   | 2.6 hours                                        | hypnotic               |
| Zopiclone§   | Imovane, Rhovane, Ximovan; Zileze; Zimoclone; Zimovane; Zopitan; Zorclone, Zopiklone  |                          | 4–6 hours                                        | hypnotic               |

## Output:


source: web
label: explode