| very | 15 | degree |
| in the united states | 10 | location |
| in developed countries | 6 | location |
| plague → be → rare | 29 |
| plague → be → rare disease | 4 |
| negative | neutral | positive |
| 0.317 | 0.500 | 0.183 |
| Raw frequency | 33 |
| Normalized frequency | 0.647 |
| Modifier score | 0.500 |
| Perplexity | 84.288 |