| very | 12 | degree |
| compared to fossil fuel | 9 | other |
| above all else | 8 | degree |
| hydrogen → be → clean | 37 |
| hydrogen → be → clean fuel | 16 |
| hydrogen → be used as → clean fuel | 5 |
| negative | neutral | positive |
| 0.085 | 0.301 | 0.614 |
| Raw frequency | 58 |
| Normalized frequency | 0.551 |
| Modifier score | 0.500 |
| Perplexity | 40.935 |