| during each scheduled service | 5 | temporal |
| carefully | 4 | manner |
| from engine to transmission | 2 | other |
| machine → be → examined | 25 |
| machine → be → investigated | 7 |
| machine → be → surveyed | 3 |
| negative | neutral | positive |
| 0.159 | 0.730 | 0.111 |
| Raw frequency | 35 |
| Normalized frequency | 0.404 |
| Modifier score | 0.900 |
| Perplexity | 498.586 |