| Typicality: | 0.616 |
| Saliency: | 0.628 |
| commonly | 5 | temporal |
| in the united states | 3 | location |
| on an appropriate internet website | 3 | location |
| chemical → be used in → hydraulic fracturing | 96 |
| chemical → be used in → hydraulic fracturing process | 12 |
| chemical → be used in → hydraulic fracturing fluids | 8 |
| chemical → be used for → hydraulic fracturing | 7 |
| chemical → be associated with → hydraulic fracturing | 5 |
| chemical → be used in → hydraulic fracturing operations | 3 |
| negative | neutral | positive |
| 0.378 | 0.578 | 0.045 |
| Raw frequency | 131 |
| Normalized frequency | 0.628 |
| Modifier score | 0.800 |
| Perplexity | 16.981 |