| very | 9 | degree |
| for the unexpected perk | 9 | cause |
| to the stewardess | 2 | transitive-object |
| passenger → be → grateful | 24 |
| passenger → be → thankful | 7 |
| negative | neutral | positive |
| 0.018 | 0.151 | 0.831 |
| Raw frequency | 31 |
| Normalized frequency | 0.395 |
| Modifier score | 0.733 |
| Perplexity | 400.671 |