| Typicality: | 0.356 |
| Saliency: | 0.401 |
| to treat addiction | 2 | purpose |
| since the 1960s | 2 | temporal |
| in certain situations | 2 | temporal |
| ketamine → be used to treat → chronic pain | 6 |
| ketamine → be used as → painkiller | 3 |
| ketamine → be used for → pain relief | 3 |
| negative | neutral | positive |
| 0.173 | 0.589 | 0.238 |
| Raw frequency | 12 |
| Normalized frequency | 0.401 |
| Modifier score | 0.300 |
| Perplexity | 12.186 |