| Typicality: | 0.349 |
| Saliency: | 0.232 |
| at 31,481 wells | 3 | location |
| between 2005 | 2 | temporal |
| spill → be associated with → natural gas drilling | 4 |
| spill → be associated with → unconventional oil and gas development | 3 |
| negative | neutral | positive |
| 0.431 | 0.547 | 0.022 |
| Raw frequency | 7 |
| Normalized frequency | 0.232 |
| Modifier score | 0.500 |
| Perplexity | 64.349 |