| Typicality: | 0.465 |
| Saliency: | 0.504 |
| in 1998 | 9 | temporal |
| as the first drug | 6 | manner |
| viagra → hit → the market | 5 |
| viagra → come on → the market | 4 |
| viagra → arrive on → the market | 4 |
| viagra → be on → the market | 4 |
| viagra → be introduced in → the market | 3 |
| negative | neutral | positive |
| 0.143 | 0.728 | 0.129 |
| Raw frequency | 20 |
| Normalized frequency | 0.504 |
| Modifier score | 0.500 |
| Perplexity | 109.304 |