| tightly | 3 | manner |
| properly | 3 | degree |
| hermetically | 2 | manner |
| valve → be → sealed | 34 |
| valve → be turned to → sealing | 3 |
| valve → be → self-sealing | 3 |
| negative | neutral | positive |
| 0.139 | 0.757 | 0.104 |
| Raw frequency | 40 |
| Normalized frequency | 0.389 |
| Modifier score | 1.000 |
| Perplexity | 208.764 |