| with a 30 night sleep trial | 3 | other |
| to ensure | 2 | purpose |
| mattress → have → guarantee | 13 |
| mattress → be → guaranteed | 6 |
| mattress → come with → guarantee | 3 |
| negative | neutral | positive |
| 0.132 | 0.613 | 0.254 |
| Raw frequency | 22 |
| Normalized frequency | 0.282 |
| Modifier score | 0.125 |
| Perplexity | 200.601 |