| extensively | 3 | degree |
| carefully | 3 | manner |
| so little | 3 | degree |
| cave → be → surveyed | 21 |
| cave → be → studied | 10 |
| cave → be → investigated | 8 |
| cave → be → study | 5 |
| cave → be → examined | 4 |
| cave → be → researched | 4 |
| negative | neutral | positive |
| 0.099 | 0.784 | 0.118 |
| Raw frequency | 52 |
| Normalized frequency | 0.531 |
| Modifier score | 0.786 |
| Perplexity | 158.488 |