| to eliminate light and algae formation | 3 | purpose |
| on the bottom | 3 | location |
| in colour | 2 | other |
| container → be → black | 8 |
| container → be painted → black | 5 |
| negative | neutral | positive |
| 0.201 | 0.678 | 0.120 |
| Raw frequency | 13 |
| Normalized frequency | 0.228 |
| Modifier score | 0.900 |
| Perplexity | 234.653 |