| highly | 44 | degree |
| to ammonia | 16 | cause |
| at low temperatures | 7 | temporal |
| catalyst → be → active | 119 |
| catalyst → become → active | 6 |
| negative | neutral | positive |
| 0.071 | 0.607 | 0.322 |
| Raw frequency | 125 |
| Normalized frequency | 0.872 |
| Modifier score | 0.643 |
| Perplexity | 95.077 |