| thanks to this direct conversion | 7 | cause |
| very | 5 | degree |
| completely | 3 | degree |
| fuel cell → be → clean | 21 |
| fuel cell → be → cleaner | 6 |
| negative | neutral | positive |
| 0.044 | 0.184 | 0.773 |
| Raw frequency | 27 |
| Normalized frequency | 0.441 |
| Modifier score | 0.500 |
| Perplexity | 95.456 |