| over time | 6 | temporal |
| considerably | 3 | degree |
| after eight years | 3 | temporal |
| mattress → be → heavier | 16 |
| mattress → get → heavier | 5 |
| mattress → become → heavier | 4 |
| mattress → be on → heavier side | 3 |
| negative | neutral | positive |
| 0.317 | 0.447 | 0.236 |
| Raw frequency | 28 |
| Normalized frequency | 0.316 |
| Modifier score | 0.300 |
| Perplexity | 194.607 |