| Typicality: | 0.638 |
| Saliency: | 0.861 |
| directly | 14 | manner |
| during shale gas extraction3 | 9 | temporal |
| during production | 8 | temporal |
| methane → be released into → the atmosphere | 108 |
| methane → be released to → the atmosphere | 24 |
| methane → be released into → the air | 16 |
| methane → be released into → the environment | 7 |
| methane → be emitted into → the air | 6 |
| methane → gets released into → the atmosphere | 4 |
| methane → released to → the atmosphere | 3 |
| methane → be released in → the atmosphere | 3 |
| methane → release into → the atmosphere | 3 |
| negative | neutral | positive |
| 0.475 | 0.472 | 0.053 |
| Raw frequency | 174 |
| Normalized frequency | 0.861 |
| Modifier score | 0.833 |
| Perplexity | 12.646 |