| very | 4 | degree |
| relatively | 2 | degree |
| in service | 2 | other |
| airplane → be → simple | 10 |
| airplane → be easy to → fly | 7 |
| airplane → be → easy | 7 |
| negative | neutral | positive |
| 0.110 | 0.331 | 0.559 |
| Raw frequency | 24 |
| Normalized frequency | 0.427 |
| Modifier score | 0.500 |
| Perplexity | 294.739 |