| fully | 3 | degree |
| from the collecting vessel | 2 | other |
| valve → be → drained | 6 |
| valve → drain → the system | 4 |
| valve → drain → the fluid | 3 |
| negative | neutral | positive |
| 0.239 | 0.707 | 0.055 |
| Raw frequency | 13 |
| Normalized frequency | 0.220 |
| Modifier score | 0.500 |
| Perplexity | 320.645 |