| in the long term | 3 | temporal |
| in average dissolved oxygen concentrations | 2 | other |
| generally | 2 | degree |
| pollution → be → lower | 6 |
| pollution → cause → decrease | 3 |
| negative | neutral | positive |
| 0.369 | 0.394 | 0.237 |
| Raw frequency | 9 |
| Normalized frequency | 0.300 |
| Modifier score | 0.500 |
| Perplexity | 75.948 |