| to engage in such traffic | 5 | purpose |
| from durban | 2 | location |
| vessel → be able to → sail | 17 |
| vessel → could → sail | 6 |
| vessel → can → sail | 4 |
| negative | neutral | positive |
| 0.065 | 0.572 | 0.362 |
| Raw frequency | 27 |
| Normalized frequency | 0.438 |
| Modifier score | 0.700 |
| Perplexity | 133.593 |