| to the naked eye | 12 | transitive-object |
| often | 10 | temporal |
| unlike servers in the data center | 9 | other |
| problem → be → invisible | 59 |
| problem → remain → invisible | 8 |
| problem → become → invisible | 3 |
| negative | neutral | positive |
| 0.512 | 0.409 | 0.079 |
| Raw frequency | 70 |
| Normalized frequency | 0.372 |
| Modifier score | 0.564 |
| Perplexity | 130.842 |