| from the field | 7 | location |
| due to stricter environmental and safety regulations | 6 | cause |
| via creating down hole fractures | 5 | manner |
| gas → be → recovered | 52 |
| gas → be → recoverable | 6 |
| negative | neutral | positive |
| 0.162 | 0.694 | 0.144 |
| Raw frequency | 58 |
| Normalized frequency | 0.532 |
| Modifier score | 0.500 |
| Perplexity | 432.278 |