| Typicality: | 0.440 |
| Saliency: | 0.649 |
| each year | 4 | temporal |
| flu → be caused by → different viruses | 24 |
| flu → be caused by → a variety of flu viruses | 9 |
| flu → be caused by → several viruses | 7 |
| flu → be caused by → a number of viruses | 6 |
| flu → be caused by → different group of viruses | 5 |
| flu → be caused by → a group of viruses | 5 |
| flu → be caused by → different influenza viruses | 4 |
| flu → be triggered by → different viruses | 4 |
| negative | neutral | positive |
| 0.757 | 0.229 | 0.014 |
| Raw frequency | 64 |
| Normalized frequency | 0.649 |
| Modifier score | 0.500 |
| Perplexity | 75.363 |