| for both convulsions | 10 | cause |
| often | 6 | temporal |
| since ancient greece | 3 | temporal |
| amethyst → be → treated | 10 |
| amethyst → be used to treat → problem | 9 |
| amethyst → be → treatment | 5 |
| amethyst → be used in → medicine | 3 |
| negative | neutral | positive |
| 0.077 | 0.717 | 0.207 |
| Raw frequency | 27 |
| Normalized frequency | 0.500 |
| Modifier score | 0.643 |
| Perplexity | 322.557 |