| very | 14 | degree |
| to the fire door’s performance | 11 | transitive-object |
| usually | 9 | degree |
| seal → be → important | 43 |
| seal → be → vital | 14 |
| seal → be → critical | 13 |
| seal → be → crucial | 7 |
| negative | neutral | positive |
| 0.097 | 0.603 | 0.300 |
| Raw frequency | 77 |
| Normalized frequency | 0.577 |
| Modifier score | 0.710 |
| Perplexity | 63.655 |