| against viruses | 7 | transitive-object |
| for a while | 4 | temporal |
| biologically | 2 | degree |
| vaccine → be → active | 15 |
| vaccine → be in → work | 8 |
| negative | neutral | positive |
| 0.210 | 0.561 | 0.229 |
| Raw frequency | 23 |
| Normalized frequency | 0.277 |
| Modifier score | 0.500 |
| Perplexity | 418.562 |