| Typicality: | 0.453 |
| Saliency: | 0.475 |
| since 2013 | 2 | temporal |
| for nearly five years | 2 | temporal |
| helicopter → be → developed | 17 |
| helicopter → be in → development | 5 |
| negative | neutral | positive |
| 0.042 | 0.797 | 0.161 |
| Raw frequency | 22 |
| Normalized frequency | 0.475 |
| Modifier score | 0.500 |
| Perplexity | 40.973 |