| often | 14 | degree |
| because of its tendency | 7 | cause |
| in rich countries | 7 | location |
| infection → be → lethal | 40 |
| infection → become → lethal | 3 |
| negative | neutral | positive |
| 0.818 | 0.156 | 0.026 |
| Raw frequency | 43 |
| Normalized frequency | 0.439 |
| Modifier score | 0.530 |
| Perplexity | 138.624 |