| from person | 7 | other |
| by ingesting items | 4 | manner |
| mainly | 4 | degree |
| polio → be → spread | 8 |
| polio → can → spread | 5 |
| polio → spread to → person | 4 |
| negative | neutral | positive |
| 0.747 | 0.239 | 0.014 |
| Raw frequency | 17 |
| Normalized frequency | 0.438 |
| Modifier score | 0.900 |
| Perplexity | 127.078 |