| in cities | 3 | location |
| amongst others | 2 | other |
| problem → be related to → pollution | 24 |
| problem → be associated with → pollution | 18 |
| problem → be related to → environmental pollution | 13 |
| problem → include → environmental pollution | 8 |
| problem → be linked to → environmental pollution | 6 |
| negative | neutral | positive |
| 0.506 | 0.319 | 0.175 |
| Raw frequency | 69 |
| Normalized frequency | 0.370 |
| Modifier score | 0.825 |
| Perplexity | 96.128 |