| Typicality: | 0.325 |
| Saliency: | 0.382 |
| from a few weeks | 11 | temporal |
| gradually | 4 | degree |
| sometimes | 4 | temporal |
| symptom → last for → several months | 21 |
| symptom → last to → several months | 10 |
| symptom → last → several months | 5 |
| symptom → take → several months | 5 |
| symptom → go over → several months | 4 |
| symptom → lasted for → several months | 3 |
| symptom → go over → a period of months | 3 |
| negative | neutral | positive |
| 0.477 | 0.468 | 0.055 |
| Raw frequency | 51 |
| Normalized frequency | 0.382 |
| Modifier score | 0.500 |
| Perplexity | 9.323 |