| for industry | 14 | transitive-object |
| for transportation | 8 | purpose |
| to our health | 8 | transitive-object |
| river → be → essential | 50 |
| river → be → vital | 48 |
| river → be → crucial | 24 |
| negative | neutral | positive |
| 0.058 | 0.579 | 0.362 |
| Raw frequency | 122 |
| Normalized frequency | 0.643 |
| Modifier score | 0.733 |
| Perplexity | 382.536 |