| including heavy | 12 | other |
| annually | 2 | temporal |
| escalator → be → repaired | 6 |
| escalator → need → the maintenance | 3 |
| escalator → need → repair | 3 |
| negative | neutral | positive |
| 0.201 | 0.598 | 0.201 |
| Raw frequency | 12 |
| Normalized frequency | 0.654 |
| Modifier score | 0.500 |
| Perplexity | 57.995 |