| generally | 3 | degree |
| with the foam inserts | 2 | other |
| mattress → be made of → wool | 18 |
| mattress → be made with → wool | 14 |
| mattress → be made from → wool | 4 |
| mattress → be made of → natural wool | 4 |
| negative | neutral | positive |
| 0.079 | 0.576 | 0.346 |
| Raw frequency | 40 |
| Normalized frequency | 0.367 |
| Modifier score | 0.500 |
| Perplexity | 168.519 |