| Typicality: | 0.487 |
| Saliency: | 0.251 |
| historically | 2 | temporal |
| since ancient times | 2 | temporal |
| stone → sharpen → knife | 7 |
| stone → be used for → knife | 4 |
| stone → be used to sharpen → knife | 3 |
| negative | neutral | positive |
| 0.165 | 0.802 | 0.033 |
| Raw frequency | 14 |
| Normalized frequency | 0.251 |
| Modifier score | 0.900 |
| Perplexity | 158.812 |