| Typicality: | 0.397 |
| Saliency: | 0.344 |
| depending on the type of surgery | 8 | other |
| to visualize the mitral valve | 3 | purpose |
| surgeon → open → the heart | 19 |
| surgeon → open → heart | 5 |
| surgeon → open → the heart chamber | 4 |
| negative | neutral | positive |
| 0.193 | 0.762 | 0.046 |
| Raw frequency | 28 |
| Normalized frequency | 0.344 |
| Modifier score | 0.500 |
| Perplexity | 212.780 |