| Typicality: | 0.410 |
| Saliency: | 0.376 |
| from the back of the spine | 8 | location |
| for an epidural | 4 | purpose |
| after appropriate anesthetic | 3 | temporal |
| needle → be inserted into → epidural space | 10 |
| needle → enter → epidural space | 10 |
| needle → be in → epidural space | 7 |
| needle → be placed in → epidural space | 4 |
| needle → be placed into → epidural space | 3 |
| negative | neutral | positive |
| 0.199 | 0.756 | 0.045 |
| Raw frequency | 34 |
| Normalized frequency | 0.376 |
| Modifier score | 0.500 |
| Perplexity | 33.366 |