| highly | 17 | degree |
| in the highest measure | 13 | other |
| unlike natural gas | 5 | other |
| hydrogen → be → explosive | 49 |
| hydrogen → be → explosive gas | 20 |
| negative | neutral | positive |
| 0.496 | 0.417 | 0.088 |
| Raw frequency | 69 |
| Normalized frequency | 0.583 |
| Modifier score | 0.500 |
| Perplexity | 43.841 |