| very | 18 | degree |
| for preventing infection | 12 | purpose |
| as a complement to quimiotherapy | 10 | purpose |
| vaccine → be → useful | 93 |
| vaccine → be → helpful | 74 |
| vaccine → come in → handy | 4 |
| vaccine → prove → useful | 4 |
| negative | neutral | positive |
| 0.166 | 0.415 | 0.419 |
| Raw frequency | 175 |
| Normalized frequency | 0.553 |
| Modifier score | 0.580 |
| Perplexity | 80.891 |