| without this approach | 3 | other |
| previously | 2 | temporal |
| from view | 2 | other |
| problem → be → hidden | 14 |
| problem → remain → hidden | 4 |
| negative | neutral | positive |
| 0.499 | 0.430 | 0.071 |
| Raw frequency | 18 |
| Normalized frequency | 0.284 |
| Modifier score | 0.133 |
| Perplexity | 251.126 |