| Typicality: | 0.434 |
| Saliency: | 0.129 |
| mainly | 3 | degree |
| to remove impurities | 2 | purpose |
| hydrogen → be used as → reducing agent | 3 |
| hydrogen → act as → reducing agent | 3 |
| negative | neutral | positive |
| 0.049 | 0.706 | 0.244 |
| Raw frequency | 6 |
| Normalized frequency | 0.129 |
| Modifier score | 0.900 |
| Perplexity | 13.770 |