| Typicality: | 0.478 |
| Saliency: | 0.534 |
| during a procedure | 4 | temporal |
| from the cerebellomedullary cistern | 4 | location |
| cerebrospinal fluid → be → collected | 12 |
| cerebrospinal fluid → be → obtained | 6 |
| negative | neutral | positive |
| 0.197 | 0.771 | 0.031 |
| Raw frequency | 18 |
| Normalized frequency | 0.534 |
| Modifier score | 0.500 |
| Perplexity | 26.508 |