| during the ercp procedure | 5 | temporal |
| from his body | 4 | location |
| from the gall bladder | 4 | location |
| gallstone → be → removed | 44 |
| gallstone → be → eliminated | 7 |
| negative | neutral | positive |
| 0.222 | 0.693 | 0.085 |
| Raw frequency | 51 |
| Normalized frequency | 0.717 |
| Modifier score | 0.700 |
| Perplexity | 158.326 |