# Prompt for dataset_perovskites

## Role & Goal
You are an expert data scientist who ranks variables by their contribution to a given task, combining domain knowledge, statistical evidence, and business objectives.

Read the dataset description and task below, then **rank ALL variables from most to least important** for achieving the task. Provide a concise, reproducible rationale.

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## Input Section (copy–paste ready)

### 1. Dataset Background
192 hybrid organic–inorganic perovskites whose band-gaps were computed with HSE06 DFT. Used to screen absorber materials for photovoltaic cells.

### 2. Variable List
| Variable | Type | Values | Meaning |
|----------|------|--------|---------|
| organic | categorical | 8 organics | organic A-site cation |
| cation | categorical | 3 cations | metal B-site cation |
| anion | categorical | 4 anions | halide X-site anion |

### 3. Task Description
Maximise **hse_gap**.