| against seasonal influenza | 3 | transitive-object |
| from light | 3 | transitive-object |
| clearly | 2 | manner |
| antibody → be → protected | 6 |
| antibody → be required for → protection | 4 |
| antibody → be needed for → protection | 3 |
| antibody → be important for → protection | 3 |
| negative | neutral | positive |
| 0.218 | 0.639 | 0.142 |
| Raw frequency | 16 |
| Normalized frequency | 0.324 |
| Modifier score | 0.500 |
| Perplexity | 171.448 |