| to obtain | 9 | other |
| very | 6 | degree |
| often | 6 | degree |
| patent → be → difficult | 28 |
| patent → be → hard | 12 |
| patent → be → the hardest | 3 |
| negative | neutral | positive |
| 0.546 | 0.368 | 0.086 |
| Raw frequency | 43 |
| Normalized frequency | 0.385 |
| Modifier score | 0.700 |
| Perplexity | 327.371 |