| Typicality: | 0.541 |
| Saliency: | 0.404 |
| from getting into nearby soil | 7 | transitive-object |
| typically | 3 | degree |
| for both unconventional and conventional wells | 2 | purpose |
| chemical → be used in → drilling | 22 |
| chemical → be used in → the drilling process | 6 |
| chemical → be used for → drilling | 3 |
| chemical → be used in → drilling fluids | 3 |
| negative | neutral | positive |
| 0.463 | 0.490 | 0.047 |
| Raw frequency | 34 |
| Normalized frequency | 0.404 |
| Modifier score | 0.867 |
| Perplexity | 50.623 |