| aground | 4 | degree |
| very | 4 | degree |
| due to low observability features | 4 | cause |
| vessel → be → difficult | 12 |
| vessel → be → hard | 9 |
| vessel → be → harder | 3 |
| negative | neutral | positive |
| 0.396 | 0.497 | 0.107 |
| Raw frequency | 24 |
| Normalized frequency | 0.415 |
| Modifier score | 0.775 |
| Perplexity | 134.595 |