| in nature | 5 | location |
| enough to cave | 4 | purpose |
| very | 2 | degree |
| rock → be → brittle | 38 |
| rock → become → brittle | 5 |
| rock → behave in → brittle fashion | 3 |
| negative | neutral | positive |
| 0.406 | 0.508 | 0.087 |
| Raw frequency | 46 |
| Normalized frequency | 0.552 |
| Modifier score | 0.733 |
| Perplexity | 270.135 |