| for a short period of time | 8 | temporal |
| depending on this criterion | 4 | other |
| for the ebook system | 3 | other |
| signal → be → valid | 56 |
| signal → remain → valid | 3 |
| negative | neutral | positive |
| 0.074 | 0.674 | 0.252 |
| Raw frequency | 59 |
| Normalized frequency | 0.499 |
| Modifier score | 0.800 |
| Perplexity | 211.299 |