| to the naked eye | 5 | transitive-object |
| no longer | 3 | temporal |
| usually | 3 | degree |
| flea → be → visible | 10 |
| flea → be → spotted | 7 |
| flea → be → evident | 4 |
| negative | neutral | positive |
| 0.335 | 0.562 | 0.103 |
| Raw frequency | 21 |
| Normalized frequency | 0.580 |
| Modifier score | 0.500 |
| Perplexity | 227.362 |