| in the hc purification efficiency | 4 | other |
| to stoichiometric reagents | 2 | other |
| catalyst → be → superior | 6 |
| catalyst → have → advantage | 4 |
| negative | neutral | positive |
| 0.018 | 0.257 | 0.726 |
| Raw frequency | 10 |
| Normalized frequency | 0.282 |
| Modifier score | 0.500 |
| Perplexity | 274.533 |