| very | 35 | degree |
| at very low concentrations | 13 | other |
| potentially | 10 | degree |
| gas → be → dangerous | 103 |
| gas → be → hazardous | 37 |
| gas → be → deadly | 29 |
| gas → become → dangerous | 7 |
| gas → be dangerous to → life | 3 |
| gas → be → dangerous substance | 3 |
| negative | neutral | positive |
| 0.862 | 0.120 | 0.018 |
| Raw frequency | 182 |
| Normalized frequency | 0.737 |
| Modifier score | 0.482 |
| Perplexity | 40.481 |