| until the mid-20th century | 7 | temporal |
| often | 5 | degree |
| very | 4 | degree |
| land → be → swampy | 70 |
| land → be filled with → swamp | 4 |
| land → become → swampy | 3 |
| negative | neutral | positive |
| 0.448 | 0.472 | 0.081 |
| Raw frequency | 77 |
| Normalized frequency | 0.517 |
| Modifier score | 0.750 |
| Perplexity | 119.207 |