| as a backup | 6 | manner |
| always | 3 | temporal |
| passenger → have → control | 11 |
| passenger → operate → control | 5 |
| passenger → control → the system | 4 |
| passenger → be → controlled | 3 |
| negative | neutral | positive |
| 0.122 | 0.673 | 0.205 |
| Raw frequency | 23 |
| Normalized frequency | 0.344 |
| Modifier score | 1.000 |
| Perplexity | 265.944 |