| very | 35 | degree |
| to society | 14 | transitive-object |
| to such a field operating costs | 7 | transitive-object |
| problem → be → costly | 182 |
| problem → become → costly | 23 |
| problem → prove → costly | 6 |
| problem → get → costly | 5 |
| problem → end up being → costly | 3 |
| negative | neutral | positive |
| 0.706 | 0.235 | 0.058 |
| Raw frequency | 219 |
| Normalized frequency | 0.506 |
| Modifier score | 0.775 |
| Perplexity | 379.511 |