| much | 9 | degree |
| depending on the year | 7 | other |
| gradually | 4 | manner |
| pool → be → deeper | 52 |
| pool → get → deeper | 18 |
| pool → become → deeper | 6 |
| pool → have → deeper area | 5 |
| pool → be made → deeper | 3 |
| negative | neutral | positive |
| 0.067 | 0.558 | 0.375 |
| Raw frequency | 84 |
| Normalized frequency | 0.487 |
| Modifier score | 0.800 |
| Perplexity | 266.789 |