| Typicality: | 0.342 |
| Saliency: | 0.344 |
| to doctors | 4 | transitive-object |
| highly | 3 | degree |
| after a decade of investigations | 3 | temporal |
| disease → be → mysterious | 12 |
| disease → be → mystery | 7 |
| disease → be treated as → mystery | 3 |
| disease → be shrouded in → mystery | 3 |
| negative | neutral | positive |
| 0.479 | 0.452 | 0.069 |
| Raw frequency | 25 |
| Normalized frequency | 0.344 |
| Modifier score | 0.600 |
| Perplexity | 190.620 |