| for 5 hours | 6 | temporal |
| for four hours | 6 | temporal |
| overnight | 5 | temporal |
| solution → be → refluxed | 26 |
| solution → be brought to → reflux | 4 |
| negative | neutral | positive |
| 0.091 | 0.843 | 0.066 |
| Raw frequency | 30 |
| Normalized frequency | 0.342 |
| Modifier score | 0.500 |
| Perplexity | 301.839 |