| from viruses | 24 | other |
| from grammatical errors | 17 | other |
| from errors | 9 | other |
| document → be → free | 184 |
| document → be free to → access | 3 |
| negative | neutral | positive |
| 0.136 | 0.536 | 0.328 |
| Raw frequency | 187 |
| Normalized frequency | 0.562 |
| Modifier score | 0.947 |
| Perplexity | 99.277 |