| mechanically | 9 | manner |
| before disappearing behind a tree line | 8 | temporal |
| sometimes | 5 | degree |
| engine → be → sound | 50 |
| engine → make → sound | 10 |
| engine → produce → sound | 7 |
| engine → have → sound | 3 |
| engine → be → sounds | 3 |
| negative | neutral | positive |
| 0.167 | 0.494 | 0.339 |
| Raw frequency | 73 |
| Normalized frequency | 0.516 |
| Modifier score | 0.800 |
| Perplexity | 162.485 |