| sometimes | 9 | temporal |
| due to congestion | 9 | cause |
| severely | 5 | degree |
| valve → be → damaged | 115 |
| valve → become → damaged | 73 |
| valve → get → damaged | 12 |
| valve → be become → damaged | 10 |
| valve → weaken → damaged | 3 |
| valve → gets → damaged | 3 |
| valve → have → damage | 3 |
| valve → becomes → damaged | 3 |
| negative | neutral | positive |
| 0.753 | 0.232 | 0.015 |
| Raw frequency | 222 |
| Normalized frequency | 0.647 |
| Modifier score | 0.582 |
| Perplexity | 338.810 |