| to a plant’s control | 12 | transitive-object |
| very | 10 | degree |
| in high-pressure service | 5 | location |
| valve → be → important | 23 |
| valve → be → essential | 15 |
| valve → be → critical | 14 |
| valve → be → crucial | 7 |
| valve → be → vital | 6 |
| negative | neutral | positive |
| 0.097 | 0.606 | 0.297 |
| Raw frequency | 65 |
| Normalized frequency | 0.462 |
| Modifier score | 1.000 |
| Perplexity | 315.836 |