| Typicality: | 0.455 |
| Saliency: | 0.305 |
| really | 2 | degree |
| history → be → challenging | 7 |
| history → be → challenge | 5 |
| history → be composed of → challenge | 3 |
| negative | neutral | positive |
| 0.138 | 0.334 | 0.528 |
| Raw frequency | 15 |
| Normalized frequency | 0.305 |
| Modifier score | 1.000 |
| Perplexity | 170.941 |