| preferably | 2 | degree |
| for added protection from accidents | 2 | purpose |
| with curved rear glass | 2 | other |
| tractor → have → cab | 7 |
| tractor → include → cab | 3 |
| negative | neutral | positive |
| 0.167 | 0.746 | 0.087 |
| Raw frequency | 10 |
| Normalized frequency | 0.336 |
| Modifier score | 0.500 |
| Perplexity | 382.245 |