| because of extraordinary circumstances | 11 | cause |
| reasonably | 5 | degree |
| often, longer notice | 2 | temporal |
| period → be → required | 65 |
| period → be → mandatory | 15 |
| period → be → requirement | 3 |
| negative | neutral | positive |
| 0.144 | 0.793 | 0.063 |
| Raw frequency | 83 |
| Normalized frequency | 0.548 |
| Modifier score | 0.325 |
| Perplexity | 86.687 |