| Typicality: | 0.434 |
| Saliency: | 0.485 |
| all times | 7 | temporal |
| most often | 4 | degree |
| classroom → be → challenging | 18 |
| classroom → be → difficult | 8 |
| classroom → be → challenge | 3 |
| negative | neutral | positive |
| 0.150 | 0.260 | 0.590 |
| Raw frequency | 29 |
| Normalized frequency | 0.485 |
| Modifier score | 0.700 |
| Perplexity | 278.375 |