| in the us | 7 | location |
| very | 5 | degree |
| increasingly | 3 | degree |
| research → be → difficult | 17 |
| research → be → fraught | 5 |
| research → be → hard | 5 |
| research → be → challenging | 3 |
| negative | neutral | positive |
| 0.498 | 0.401 | 0.101 |
| Raw frequency | 30 |
| Normalized frequency | 0.461 |
| Modifier score | 0.700 |
| Perplexity | 89.681 |