| separately | 3 | manner |
| from organic waste | 3 | other |
| hydrogen → be → collected | 21 |
| hydrogen → be → recovered | 14 |
| hydrogen → be → captured | 11 |
| hydrogen → be captured as → result | 3 |
| negative | neutral | positive |
| 0.087 | 0.710 | 0.203 |
| Raw frequency | 49 |
| Normalized frequency | 0.519 |
| Modifier score | 0.500 |
| Perplexity | 425.591 |