| to the environment | 24 | transitive-object |
| to humans | 13 | transitive-object |
| to health | 12 | transitive-object |
| gas → be → harmful | 99 |
| gas → have → harmful effect | 3 |
| negative | neutral | positive |
| 0.828 | 0.130 | 0.042 |
| Raw frequency | 102 |
| Normalized frequency | 0.633 |
| Modifier score | 0.813 |
| Perplexity | 202.632 |