| behind the wheel | 9 | location |
| seldom | 4 | degree |
| alone | 2 | manner |
| driver → be → sleepy | 57 |
| driver → feel → sleepy | 22 |
| driver → get → sleepy | 14 |
| driver → become → sleepy | 10 |
| negative | neutral | positive |
| 0.417 | 0.495 | 0.088 |
| Raw frequency | 103 |
| Normalized frequency | 0.556 |
| Modifier score | 0.733 |
| Perplexity | 497.572 |