| during transmission | 10 | temporal |
| intentionally | 6 | manner |
| in the past | 5 | temporal |
| methane → be → vented | 18 |
| methane → vent to → the atmosphere | 7 |
| methane → be vented to → the atmosphere | 4 |
| methane → be vented into → the atmosphere | 3 |
| negative | neutral | positive |
| 0.525 | 0.397 | 0.078 |
| Raw frequency | 32 |
| Normalized frequency | 0.502 |
| Modifier score | 0.800 |
| Perplexity | 102.098 |