| to all types of subsurface disposal | 7 | other |
| among older people | 7 | other |
| to quality agreements | 5 | transitive-object |
| concern → be → common | 67 |
| concern → be → common one | 3 |
| negative | neutral | positive |
| 0.247 | 0.499 | 0.254 |
| Raw frequency | 70 |
| Normalized frequency | 0.526 |
| Modifier score | 0.675 |
| Perplexity | 428.831 |