| Typicality: | 0.571 |
| Saliency: | 0.399 |
| for the last 60 years | 4 | temporal |
| chemical → be used in → water treatment | 13 |
| chemical → be used to treat → water | 8 |
| chemical → be used to treat → the water | 6 |
| chemical → be used to treat → drinking water | 3 |
| chemical → be used for → water treatment | 3 |
| negative | neutral | positive |
| 0.449 | 0.502 | 0.049 |
| Raw frequency | 33 |
| Normalized frequency | 0.399 |
| Modifier score | 0.967 |
| Perplexity | 19.739 |