| Typicality: | 0.341 |
| Saliency: | 0.419 |
| in early clinical trials | 11 | location |
| in the early 2000s | 7 | temporal |
| in smaller u.s. studies | 7 | location |
| vaccine → show → promise | 37 |
| vaccine → shown → promise | 17 |
| vaccine → be shown → promise | 5 |
| vaccine → shown → great promise | 3 |
| vaccine → show → great promise | 3 |
| negative | neutral | positive |
| 0.104 | 0.266 | 0.629 |
| Raw frequency | 65 |
| Normalized frequency | 0.419 |
| Modifier score | 0.500 |
| Perplexity | 355.693 |